I've gradually unlearned the anxiety-driven procrastination habits that I picked up in school but it's taken almost as long as the time I spent in the system:

* I now focus on developing my own feedback mechanisms rather than worry about assigned/external ones. If you have a large enough number of "required to succeed" and "instant fail if this occurs" signals, you can know roughly how well you are doing without anyone to guide you.

* I focus on work as a cycle, rather than tasks to be cleared out. The converse of the procrastinating is the idea that if you rush around enough, you will open up time for something else, something better, but what that something is, is a big ??? The cyclical approach keeps me more grounded in hammering out a few hours of work on a regular basis, which is more sustainable.

* I look for opportunities to use my "activated" levels of energy to chase after a thread of a problem. I often don't know how long anything takes, but what I do know is that I'm doing more if I periodically throw myself at the work and solve the things I can solve and use the rest to develop more feedback(if I failed: okay, why?) - and doing this cyclically makes it sustainable.

I still have periods where my work energy is low, but the causes are typically more obvious: stress is up, I found a new game that captured my attentiom, etc.