I never had discipline when it came to self-managing, I tend to over-work, break down work time in unpredictable ways and sequentially obsess over single micro-tasks part of a big task.

But it's been a couple of days trying to self-manage with the Pomodoro technique¹ and... it works?? I don't find myself looping over the same problem, and I actually get less strained allowing me to produce qualitatively better stuff.