Realizing that had I saved all the btc I've gambled with, I could buy a new car.
That's huge amount of money lost, are you sure that you aren't addicted to gambling? because you should stop asap ( if you still think about gambling ) or play with few $ only.
My worst moment in gambling was 2 weeks ago, when i was playing roulette and i forgot to place my bet on my lucky number... and that number rolled that spin! Lost everything that night, it was pretty sad.