When has achieved profit of about 10%, then i immediately get out of casino. Because i realize, if i keep playing can be sure i will lose.
This is good, and we can make one target once we reach that amount we must stop our game. Then only we will see profit in gambling. Otherwise gambling always give us only loss we will never make a profit. I will not make any target, but if I feel that I am losing more games, i will stop my play. And suppose if we win multiple games that day I will not play more games. I will stop my play and withdraw my winning amount.
10% is a good threshold, to earn a monthly profit we have to apply a small percentage every day and not be tempted by massive instant income. In this case, I left the game freely and used to switch directly to another business model so I was not fixated on the percentage in a gambling business.