League of Legends.

I played for two years while I attended college and worked low-expectation part-time and full time graveyard shift jobs (and obviously played during the weekend), sunk so much money into those pretty costumes, got good enough that I was relatively satisfied with my abilities.... Not the best by any means but you always wanna climb that ladder.. and on a particularly rough tilt after losing something like 6 games in a row, I shut my computer down in the middle of a match I thought we were sure to lose, and went to bed; I had to be up early the next day. Rage-quitting was something I hadn't done in nearly two years at that point, when I first started playing it was a habit I quickly grew out of as I played with friends.

The next day I started a 40 hour training weekend for a new job I was hired for, the following week scheduled for numerous orientations at industrial facilities I'd be contracted to, the following week after that of hands-on training, and then the non-schedule of being a 24/7 on-call contractor.. I never logged in again. I wanna say the importance of keeping my job and staying focused on it was what stopped me, but I know at least for the first year remembering how defeated and horrible I felt.. while it wasnt something that I was a stranger to playing that game, it prevented me from starting again because the idea of feeling that way at the end of the night and then having to go to bed anticipating a physically demanding job the day.. I couldn't do it.

It's been 3 and a half years since then and I'm one of my company's highest trained and reliable, I'm sitting at a desk now instead of strictly on-call, with guaranteed overtime if I work after hours or on the weekend, I have a company vehicle to drive to and from work, and they pay for my gasoline. I don't think I could have managed my league addiction and attained this position.