Just exercise every day and be patient.

Congratulations, an excellent choice if I may say so!  The Z-in-the-middle option is a reasonable compromise for ANSI boards.

I think as seasoned angle-mod users we sometimes forget that the angle mod is quite a significant change for newcomers. After all, if you are switching direct to DH from a non-angle-mod configuration, the choice is between messing up Z,X,C or messing up Z,X,C,V !!

I've tried AngeWide mod applied to the standard Colemak before moving to DH mod. It took me longer to adopt to the new angle than it took later to get used to the new letters position.
I look to the ZXCV issue from different angle.
In case of Steve's DH mod, V remains at the same key as in qwerty. And it is still at the same finger. So, I look to that as for the standard keyboard and DvbgHm mod it is messing up ZXC, and for the DbgHk mod (and Angle mod with no DH mod) it is messing up ZXCV. At least that was like that for me, I had relieve and less errors in Ctrl-V usage when I had V moved back to its qwerty-Colemak position. Because I often press shortcuts not in touch typing hands position but while glancing to the keyboard.
Regarding the M in the central column in home row. I do not think that two central columns in the home row are so bad that only less frequent K deserves to be placed there. This position is actually easy to find. I never have problem with misspressing the keys located in qwerty's GH position while touch typing. From that point, putting D and H in the Colemak in the center of home row is good (and we have 10 most frequent English letters all in home row now). This is the HE bigram that spoils everything. But central columns home row positions are still reasonably good and easy to find. Putting G and M there is a good move IMO. ME bigram is not as frequent as HE and so less damaging, but M is still easy to touch-type. It is my opinion.

Ok, so here was my first "problem".  It is a technical one.  I use LastPass with a YubiKey which masquerades as a keyboard.  Apparently, when I have the Colemak layout enabled in Windows and OSX (Not sure about Linux yet) the YubiKey authentication fails.  So, I have to temporarily switch to qwerty.  I mention this because others might run into this issue.

Also, the problem of setting a layout for Windows and Mac (never mind Linux!) is I think a big barrier to entry for most.  I'm an IT pro by trade so it's not really an issue for me (though it is an annoyance!), but let's face it the average Joe/Jane isn't likely going to go through the effort of Downloading MS Layout Creator, Ukelele etc. and modifying things.

Speaking of the MS Layout tool...Uh, well that will be a complete non-starter for most because it has a bug that prevents it's use on modern versions of windows unless it is installed in a path with no spaces (and the default path in the installer has plenty of them!)  I had to dig for a while to discover the solution.  I would recommend a note on the ModDH page discuss that.

And Ukelele for OSX ... well lets just say I couldn't get my "bundle" to work.  So then I tried just installing the plain layout file -- and that didn't work -- until I rebooted.  But even then I see multiple entries for my custom layout in System Settings and only one of them works and, well, UGH!  Imagine a regular user going though that.  They just won't I think.

And now Linux (Ubuntu 16.04 LTS, specifically) -- well I did look at the Bag of Tricks but the help wasn't totally clear about how to set the DH mode I wanted. I kind of figured out the "short" syntax but I couldn't figure out how to get the angle mod included.  Might have been just me, but I gave up.  I then decided to try the layouts and the generator from the ModDH site.  It was a fail -- the left arrow no longer worked.  Might just be a bug in the generator or Ubuntu but I thought there might be a better/safer way so I looked at the /usr/share/X11/..../symbols/us file and noticed the colemak entry there.  I just copied those lines in the file and made a new entry called colemak-dh and edited the few lines needed to change from straight colemak to my version of the DH mod.  It was pretty simple.  But again, not something a regular user would do.  Of course, this only solves the problem in XWindows, not the console.  I'm not usually at a regular console, so I'll probably just ignore that for now.  And even with this I still have to use the setxkb... whatever command (on my Mac now so not sure what it is at the moment).  Of course, we can just assume a Linux user is technical enough but, that might not always be the case.

I wonder how hard it would be to at least get the ModDH layouts into upstream Debian or Ubuntu.  Of course the first problem is that there are too many variants and the devs would wonder why there isn't just one.  This is perhaps the biggest problem for future adopters -- it means that it will likely never be included in the OSs.  Sad, but true. 

Well enough of my newb ranting.  Feel free to comment/challenge/correct or otherwise educate me :-)

I guess people's experience varies, but I resisted the angle mod initially and only eventually applied in conjunction with my DH mod. I found it rather hard to adapt to, especially the C. This is probably as I hadn't been using my middle finger for it previously, so it was effectively a changed finger. But that's the thing: for those who are experienced in using a well-trained, traditional typing technique, it may just be applying the improved wrist angle as you suggest... but, I would suggest, most people aren't in that category. The poor design of the standard keyboards encourages people do all sorts of non-standard and ad-hoc things, and that means changing the physical keys positions ZXCV can be quite tricky to relearn, even though it's worthwhile in the end.

In fact I'd say there is a case to argue that "Dvbg" should actually be called "zxcdbg" and "Dbg" should be called "zxcvdbg". From the perspective of a newcomer, that's how I imagine I'd see it. Obviously for those who are familiar with the angle mod already, "Dbg" represents the more simple change, but my reason for still wanting to promote the "Dvbg" option primarily, is that I think it's more natural choice for angle-mod and DH newcomers.

Regarding the right hand side though, I would acknowledge the M position is my least favourite thing about Mod-DH. I think Hm, Hk or even Hmk are all decent choices. That said, it's a minor issue in the grand scheme of things - M is not much more frequent than G and no-one complains about the G position! And I do love my H position so it all seems worthwhile.

G is actually improved, at least for ING, which is very frequent. For M this is all just because of E position, whatever letter would be in former H position, it still forms bigram with E.  But ME is way less frequent than HE, and MY is even improved. I understand that KE even less frequent. But the major problem for mass adoption of both DH mods is the Angle mod, not the central keys rotation. As the qwerty's B position is less favorable by all means, removing angle mode from DvbgHm will move V in that bad position, but removing angle mode from DbgHk will move D to that position.Than, if to use sdothum's variant of DH mod with swapped V and B (DvgHm), B returns it its original position. This layout can be comfortably used without angle mod as it H is in very good position and D and V are in quite good positions, the only disadvantage is V in the top row.

I did not know about the Dpg option, yes, it looks good for the standard board, and zxcv block is untouched.
Anyway, we all agree that all these mods are just variations of Colemak which trying to fix the main complain regarding its central columns position of D and H. All these mods are keeping major traits of Colemak, unlike the Workman where "the child was poured out with the bathwater".
So Colemak may serve as an "entry drug". It is quite well known and advertized and included in most operating systems, who knows, may be we will see the day when it will hit Windows :). People who wants to improve their Colemak experience may migrate to their DH mod of choice with minimal relearning time. It is much faster and smarter to do than going someware else if DH is your only concern. I went this way, I rejected the value and need of DH mod at first, but accepted it eventually, and full relearning to get the initial speed took 2 weeks, while during these two weeks the speed was dropped just for 5-7 WPM. BTW, variants of Dvorak fixing its major issues are also exists and serve the similar purpose (google for Algernon's ADORE, while he might went too far in his modifications out of original Dvorak).

This is an interesting discourse indeed! :-)

Agh, I don't like having even two DH-mod variants, let alone more (I don't think Dpg is good enough)! But I'm not happy about moving the M to the dethroned trench position, at the very least. M is a fairly common letter (≈2.6% in English, according to the Cornell page)! Regarding V I may be slightly swayed as I see that many have a different experience of it from mine (as I was very accustomed to the pure Angle mod beforehand). I do like the thought of keeping the not-too-common V (≈1.1%) just a little more out of the way.

It seems to me that the best mod in total may be DvbgHk on a staggered board. However, there's still the issue of non-staggered boards, which is irking. But at least, if we could harmonize the left side of the board something would be gained. My love of symmetry shouldn't get in the way of efficiency!

On the flip side of things... if I go to the step of moving K to the home row, M to the K, and H to the M position... that'll keep M in its original position when using a Wide mod! :-D Again, we have a key which would move by one standard but not by another, much like the V on the left hand. The cost is one more key moved, like in SteveP's current mod. But the benefit would be a better M position (on most boards) which it deserves.

On a staggered board at least, the Colemak K position really feels a lot better than the Colemak H position! And the M is a lot more common than K (2.6% vs 0.7%).

Might we after all be able to agree on a DvbgHmk mod as a common standard, you think? It'd be so awesome if we could sell one single DH-mod together.

 q  w  F  P  B  J  L  U  Y  ; 
  a  R  S  T  g  K  N  E  I  O     The Colemak-Curl(DvbgHmk) layout
 z  x  c  D  V  _  M  H 

 q  w  F  P  B  J  L  U  Y  ; 
  a  R  S  T  g  K  N  E  I  O     The Colemak-Curl(DvbgHmk) ANSI-Z layout
    x  c  D  V  Z  M  H 

SteveP said that this changes 3 right-hand keys from Colemak instead of 2. I think the more important point is changes from QWERTY. The above mod changes 3 keys from QWERTY positions (disregarding the Wide mod argument above), like SteveP's current mod does. That's one more than my current mod and two more than standard Colemak. I guess it's an acceptable price to pay for this mod, after all.

I do realize that matrix boarders would prefer M-in-the-middle. But after all they're a minority and I'm not sure the lower position is that bad on a matrix board – is it? Anyway, the benefits of having one main DH-mod would be tangible and if we mentioned variants of it as minor ones that'd be okay. That's how Tarmak works now: There's one Tarmak, and then some historical variants for the interested.

One somewhat ugly consequence of Dvbg is the splitting up of the XCV cut/copy/paste block, as repeatedly mentioned. What I'm primarily worried about with that, is Extend. With the plain Angle mod, Extend will just follow that. With this Angle-ZXCDV mod, the Extend cut/copy/paste keys should follow suit and it gets quite messy with the left mouse button between Copy and Paste. Argh. ;-)

I think the same. But columnar and ortholinear boards becoming more popular among keyboard enthusiasts who are interesting in alternative layouts most.
(I am typing this using my Planck now :) )

This is interesting idea! Seems like not the new one, but I hear it for the first time. So basically it is swapping M and K in the Steve's DH mod. This may work. As I told already, whatever letter would land in qwerty's H position, it will have an awkward stretch with colemak's E. So K might be the best candidate for that position. The only disadvantage in the M new position is that the MY become more stretchy, but IMO it is not worst than in standard Colemak.

Progress Update:

So it's been 3-4 weeks since I embarked on my Colemak-DH journey and I've made slow steady progress.  Currently I get about 50 WPM in Amphetype (using Melville's 'Typee' -- great read by the way) and around 60 WPM in typeracer.  I used keybr extensively until last week.

Interestingly, I seem to be slower when typing my own material however.  It still isn't what I would call "natural".  It seems there is some kind of context shift that occurs when I'm retyping something I'm seeing versus typing something that I'm thinking.

My worst letters (accuracy) now are 'v' (I am constantly typing 'd' for 'v' unless I really think about it), 'f', 'u' and 'b'.  Accuracies for all those letters are sub 95% (Amphetype) and a pitiful 87% for 'v'.

I think that I am probably typing too fast, and find that a string of short easy words encourages this but then as soon as the harder stuff pops up I try to keep that pace and accuracy plummets.  My goal for this week is a steady pace and higher accuracy.  Maybe I should give keybr.com another round.

acarlow: Are you using the new Curl(DH) mod now? With HMK moved from Colemak positions?

If you come from moving V with the other keys in the Angle mod, moving V back to its unmodded position is every bit as confusing as any other key movement. To me, at least.

I've seen that my typing efficiency after a switch varies a lot with context. I think that when training with Amphetype, I learn to type effortlessly with Amphetype so it becomes a kind of "gestalt". When typing in other contexts, I may fall back to my previous layout "gestalts" at first. The Amphetype training is certainly useful, but it may take a little while to get used to switching contexts. :-)

I'm having the same experience that retyping something I see on the screen is much easier and faster, than typing my own thoughts. Some people report opposite. It might depends of personal traits.
While discussing in your thread, we came up with unified Mod-DH layout, which is combination of Steve's Mod-DH (which you are currently using), and DreymaR's Mod-DH. Position of M is the major difference between these two mods. Difference of unified layout with your current layout is swapped M and K. Benefits: eliminating lateral stretch for ME bigram (the major complain to the original Colemak having H in the central position, and so uncomfortable stretch for HE bigram, second most frequent in English). Also the K and M remains in their qwerty rows.
Check the https://colemakmods.github.io/mod-dh/ , Steve already updated the page. This is up to you which Mod to use, but you may give it a try because you did not went too far in learning.
Personally, for me this is fourth modification within a year. I went through Colemak, Angle(Z)Wide applied to Colemak, Mod-DH, and now using unified Mod-DH.