How to control gambling addiction?

I have a big gambling problem. I had built my bankroll playing 0.05$ short deck poker. I had strict rules to follow bankroll management, and move down if i lost 5 buyins when taking a shot at 0.1$, but i could not control myself enough to move down, went on tilt after a couple bad beats and blew my whole bankroll.

I am not looking for a complete cure of my addiction (it has some positive sides aswell) and its not possible. However I was wondering if it possible to develop enough selfcontrol to follow simple bankroll management plan while beeing addicted to gambling? If so, how?

I am in therapy but they dont want to help me control it they just want me to quit.