Hmm, there’s a big space between getting shitfaced every night and abstaining entirely.

So you got a lot done in two years. The chances are really strong you could have done that regardless if you had buckled down and focused on execution. Whether or not you were having a few drinks (not the same as getting shitfaced every day).

So I’d say the alcohol isn’t to blame. You get all the blame (for not doing before), and all the glory (for doing now). As it should be.