Perhaps you found out something you enjoyed tremendously more and then realized that you were never truly entertained by whatever it was before and you realize it just passed time and diverted your attention away from your troubles. Troubles that could have easily been rectified were you not "wasting" time on the aforementioned activities in the first place.
Also suppose the thing you enjoyed tremendously more was ALWAYS there, but you didn't take advantage of it for whatever reason(timidity, etc)?
Its a vicious cycle, and one that is VERY hard to break.
Of course, it wasn't necessarily the case for me, but its close.