Profound point. My mother struggled with alcoholism and ultimately succumbed to that disease. In philosophy of mind they use “akrasia” and “akratic thinking” for acting against ones better judgement. It helped me somewhat getting to understand what my mother was going through at that time.

She wanted to change, tried a many multiple of times and it failed. Fault, guilt, blame are useless concepts to use on the Other. And only in moderation should they be applied to the Self. There deep disconnects between what we think, know and do.

I find it helps to explicitly abandon the expectation that each person has a unitary and consistent will.

Bob the gambler wants to quit and wants to wager, sometimes sequentially and sometimes simultaneously.

The question isn't whether the whole Bob "means it", but which version of Bob we want to ally-with to war against the other, and what conditions or limitations we put on that assistance.

Reading this thread it seems like you're the only one moralizing and looking down on people. I don't see anyone here shaming people for their choices. But somehow you seem to have read the worst interpretation of every reply.

Or, as we're becoming aware with GLP-1 drugs, an injection. (For now!). It's better to help people behave better with drugs than moral condemnation. Almost infinitely better, as it turns out, regarding a lot of problematic behavior regarded as "untreatable" previously.