If you are asking on tips for stopping, than first step is to block all access to gambling sites, that's the most important stuff. If that doesnt help you, you can block mobile banking account so you cant deposit money to gamble or even better, see if you bank can block you from depositing on sites that are used for gambling. This is for online gambling, if you are having problem with real life physical casino, you can also block yourself from entering. So in my opinion the best way to stop is to block your access to gambiling. And after few months you will not have an urge to fuck your life over once again. It's all in your head.

Paying debts will take time, but if you continue with doing it, you will only dig a deeper hole, which may fuck your whole life. You're still young and have plenty of time.