Sudden Realization

[goodgrief]

Sounds like clinical depression to me. If you were giving up running because you want your knees to last past age 40, and you'd chosen another fitness program to take up the slack, it would just be considered a smart move. If you were giving up poker because you wanted to focus on something more meaningful to you, then again, it would be a smart move. But it sounds like you just threw it away, with no plan to do anything better.

That is widely considered a symptom of clinical depression. I'm no psychiatrist or anything, but you might want to check it out with a doctor. Could be an underlying physical health issue, also. Lyme disease, chronic fatigue, and so on, but I think if you had one of these you'd be experiencing other health problems, not just malaise. Oh, and if you recently quit caffeine, for a little while, you might feel kind of "meh" about doing anything, but it shouldn't last more than a few days in my experience.