You should know that in yourself. Greed is really hard to control. Greed can lead you more addicted to gambling. So i suggest, if you cant control yourself get out from gambling. Also you will just end up lose in the end.
Yes I think this is about controlling, I think we have to be realistic, not forever gambling always profitable. Believe me, when greed we've stuck with the addict and it could change our minds so that it does not want to work on things other than gambling.