It is obvious that you are actually not giving yourself a limit whenever you are gambling, that problem will be much worse if you'll be placing a bet consecutively and not having a limitation on your bets, you should gamble only the amount that you aren't really afraid to lose and if you found you are just losing more money you need to stop for a while . In my experience I haven't tried to gamble the same way you did which adding more money to bet, and even I am only gambling a small amount I am still controlling myself .
What he said is right. Limit yourself per day, if you have a great strategy that works, then go play with it just limit it for a day because if you continue it, you might lose everything you've worked for. That's what I'm doing now and it works. It helps me control my deposits and what I gamble.