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 very good idea - think of % of profit and simply stop gambling after you get it. This way can prevent you from being addicted to gambling, and will save player's money.
I don't have any % when i have to stop, i gamble for fun not profit so i don't really care if i'll be unlucky and lose money,i usually leave when i lose everything or i'm bored.
That makes sense if you don't bring all of your capital to the table, which a lot of people seem to be doing for some reason.