After a hundreds hours of gambling I found out that it's pretty hard to stop playing. Gambling becomes a strong addiction and has a negative impact on other aspects of life. I have tried to control myself over and over again and found out that the best way is to make a long pause to let your mind relax.
I think the best way for you is not just pausing but totally stopping for a while. You are getting addicted to it due to long hours of gambling. That is a bad thing. Quit while you are still in control. It would be harder to stop if you are full on addicted to gambling already.