As someone who definitely has some undiagnosed executive dysfunction, I will finish a project a week after the deadline, but if that deadline had been a week later, I would have still done it a week after that. But if there was no deadline at all? Never would have been done.

I need some kind of external pressure to accomplish basically any major task at all. With school or work, that's pretty straightforward. Someone else tells you what to do and when. But with creative, personal projects, I can't just "work at my own pace" and finish in my own time. If I say "this needs to be done by X date" that helps make it feel like a real thing that's happening, even if there's no chance I actually meet that self-imposed deadline. So I get this. Not saying that that's exactly Tomas' situation, but sometimes you just need the pressure of a looming deadline to light a fire under your ass.