one day I just had the luck to play a game to win $1800 on the
pokerstars Spin&Go (the buy-in was 30 dollars)
When I was heads-up with this dude, he had like 4/10 of the chips available and I had 6/10 and I was pretty much thinking that it would be easy to win, since he was not a very good player.
Anyway, I had AK, he started betting, I went all-in and he called, with Q8.
I was just really happy that he was that stupid to go all-in with that, but then a queen appeared on the turn.... I just collapsed, I tilted mentally all the way. I still won like 200 dollars for playing this game, so it was very positive, but I just could not handle this kind of stuff. I started to play like a maniac thinking that it was my right to win 1800 dollars that day, entering a lot of Spin&Go games of $ 100 for example. Anyway, I lost a lot of money for tilting like that and it at least was good for me because since then I started to have more control over my tendencies to get addicted (I was addicted to opiates for a very long time and poker helped me when I was quiting, but it was just a change on the object of addiction).
I really can't imagine what's like to lose like half a million on some of those high stakes games.. I had the chance to win 2k, lost and already freaked out LOL