Is it the game you started playing as a gambler that you still play till now? Is there any gambler in this place who was used to playing a particular game before but never was successful winning or did not win enough and then made up their mind that it was time for a change in the game you gamble on. Which game did you change from, and what did you change to? how long did you play the game that you are deciding to stop playing because of the bad outcomes?
Even though I rarely gamble, I also rarely win gambling, and that is no longer surprising to me. So if I ever win a nice amount, I am pretty sure I will stop immediately. Because, of course, that rarely happens to me.
I will select the games that I understand well and gamble that I am most interested in gambling. Many people may change their gambling style for a short period of time but not for a long time. I don't make any changes to my gambling. If I lose I think it was not my luck.
Since winning or losing in gambling depends on luck. You may be able to control yourself there but I have been aware of many gamblers whose behavior is the opposite of yours. Some of the gamblers I know, when they repeatedly lose gambling, they become frustrate and they plan to take a break if they get an expected win, but in reality they end up gambling even more because they cannot control their greed. Unless gamblers can control themselves, they can never expect good results from gambling.
Well, I think you are wrong with your last statement, self control in gambling has little to nothing to do with one expectations in gambling, and neither does it have anything to do with the outcome of the games.
Self control can only help a gambler in the are of money management, time management, as well as preventing possible addiction to gambling.
In the areas of winning, or loses in gambling, or the gamblers expectations in terms of hope, target and so on, self control has nothing to do or contribute to any of this.