If you are stuck in a loop of: I need to do X, but you just nope out of doing it, then feel guilty, and it is a recurring pattern then watch these two vids:
There is no one size fits all solution to this problem, the stuff he said kinda makes sense to me. Maybe you have different issues. I don't care about whether it is scientifically correct, he is telling some simple stuff which makes logical sense, and it does actually work for me.
Alternatively you can read the "Procrastination" post on the Wait But Why blog about the same subject. That might be more scientifically accurate.