Jack:
I believe you will manage with your addiction best by complete 100% abstinence. Since you experienced a swap of forms of gambling, from scratch offs to casino, you are familiar with “gambling is gambling is gambling”. Perhaps checking with Gamblers Anonymous to see their experience proven definition of abstinence might help. I know a gambler who was advised to not only refrain from any form of betting, but also not to flip a coin. And others know the experience that they break every rule besides complete abstinence. You are correct in stating that boundaries are always needed. For someone who has already been the victim of compulsive gambling, the boundary might be farther than for someone who has not reached that level.
MW2:
Amudim is a great resource. Rabbi Twerski’s books seem to all broach the subject of addictions. Only one, I think, addresses gambling directly. Several Judaica stores have a separate section of his books. If it’s out of print, check online.
DovidBT:
A ban from casinos may help. But there are so many other forms of gambling, including sports betting, racetracks, lotteries, and even raffles. Yes, a compulsive gambler who buys a ruboff from a boy selling for his yeshiva or the raffles and Chinese auctions is placing himself at risk. Other reasons to stay away from casinos include what MW2 described. The system is built to take away your money. They can part with some jackpots now and then, as long as these bring in more hopeful customers with lots of money to burn. The entire environment is rigged to increase their income and your loss. There is nowhere to sit, free drinks, skimpily clad nekaivos, etc. The lights and other aspects of the ambiance are all calculated to maximize your loss of money. And winnings are taxable, all reported to feds and states. There is more to lose than win, and this includes everyone.