I can relate on the opposite side. For me, it's easy to walk away when I'm winning but when I'm losing, I don't want to walk away, I'll continue to gamble until I'll be able to win by my losses. I'm kinda challenge when I lose, and I felt that if I give up when I still have something to gambling, it will not make me improve in the long run.  Honestly, I've done a lot of mistakes in the past, including this one but I am so greedy that I could not accept my losses, so I continue to gamble and bet all I have and only walk out when  I have nothing left, after all, that money is intended for gambling.