It takes more than just Thinking to quit gambling. Gambling is an addiction hard to give up, you must think of the right reasons, reasons that really motivates you to give it up otherwise, it will be in vain.
If that addiction makes you more mature in gambling and you'll have the ways to escape from it, then do it. Losing in the game of gambling is the result of greediness, and despite of that weakness you ended up to a decision of quiting. That's a certain idea to do, since it doesn't gave you more lucky profit because everytime you bet your money to it you needed to invest your time and money. After all sorts of efforts, it still remains uncertain and worst sometimes it may lost your profitable winning potentials.