Sounds like anxiety is the problem, not lack of discipline or lack of motivation.

I can relate a bit with not feeling like going out and doing something, but having a decent, or even fun time, when you are somewhere. I don't know what it is. The pressure to have to go somewhere and be on time. The pressure of putting up a facade for others when you interact socially. But often it is appealing to decide to not go that specific day/week and spend the time alone instead.

I had that last thing as a very young child, and still have it as a high functional mature adult (at least I ought to be that), but it still stays with me, in some way.

I don't know if it is possible for you to identify it as anxiety, then get to the course and alleviate it a bit.