Ta fer the watch!
I just read yer journal post and although it's good to be your own worst critic, it's all too easy to focus on the problem rather than the solution.
If you can identify the issue, look up ways to find the solution.
It can also be as simple as going back to your fundamentals in things like anatomy and perspective, as well as practicing things like still life or getting friends to model for you.
I also advocate keeping an eye out for book fairs and secondhand bookshops as those are oft good places to pick up reference books.