Hi Don,
the best tool for that is cost-benefit analysis,
list all the benefits of gambling “and yes there are some benefits”, then list all the costs and all the suffering. put them next to each other and ask your self you still need to gamble?
if you still say yes I need to control it, go back and start questioning the listed benefits, are they real or they are just illusional benefits?
there are many tools, the above is one of them,
CBT is very good to take you from position A to B.
in my case, it was experience and relapses, and reaching a rock bottom that let me move from point A to B, but you don’t need all that suffering and you don’t need to waste another year or two of your life to reach point B and start addressing this addiction in a proper way.
a depressing note: point B doesn’t mean you recover, but it means you are now ready to start your recovery. it is a long way, but you need to start walking on it.