I have often wondered if some kind of boredom conditioning could help with gambling addiction.
My idle thought is based on experience my brother and I had about a decade ago while undergraduates. Around this time the online casino business was extraordinarily competitive and they were offering rather large incentives to sign up and play. At this time, although not any more, the terms and conditions of these bonuses were such that you could claim them, wager the minimum amount they mandated and withdraw a large proportion of the free money they had given you. Of course, to be profitable, you had to play a very short list of games with a low house edge and stick absolutely rigidly to the optimum playing strategy.
Over one summer this was our 'job'. Between us we gambled a cumulative total of many hundreds of thousands of dollars. Even accounting for various sites where we wrote software to do it for us, we played more blackjack than the vast majority of people ever will in their lives. To start with it was very exciting as the variance ensures a rollercoaster of upswings and downswings. By the end it was just another massively boring data entry job as we'd seen regression to the mean work its magic so many times. Neither of us ever wanted to see a casino game ever again.