I think I might be starting to get what @visakanv talks about with coercion a little more
when I get in my own way, or spend time in a way that I later regret, it's usually not with "fun" stuff. I play a game for a couple hours, I enjoy it, I shut it off
the time that I tend to look back on as least productive is when I end up writing code that solves the wrong problem, or struggling for ages to write something that I actually just didn't understand enough yet