When we play gambling, than it is normal that we become greedy. Because everyone play gambling to earn money and in this way, if we become greedy than sometime we win in behalf of our greediness.
That's why when you go for gambling shouldn't load a lot of money instead just load how much you can afford to lose for that session and gamble. If you do like this then no need to worry about how much you lost but you can enjoy the games. I never load more money to gambling site and always play with small amount to enjoy my time.