It is hard to control ourselves actually, if you are addicted, you could hardly quit it. My strategy is to quit and forget the site after I win money, and never come back.
So you do that every time you gamble? The other question is what if your first attempt is a lose, I think you cannot do that all the time and that strategy would not work, losing and winning are part of the game and as gamblers no one is exempted on that kind of experience.
Honestly it depends of a gambler not all people are the same so i think it can be happen.. they can control their self from the first time before they are addicted or i think even you are addicted.. i experience before that im become addicted in one of the game poker but i stop it because i realize that i am not making any profit its not hard for me to stop because i am thinking for my family..