Can't say it better than Ken did. Although I will stress that we do have very primitive brains that send us signals for instant gratification. Part of the process of succeeding at anything is learning how to work around that. Sometimes it means modifying your environment so triggers aren't around you. Sometimes it might mean shopping at a different store so you're not triggered by certain sights and smells.

The worst thing is failing and not learning how to fix failure. That leads people to believe they have no control, they get desperate, and then things like surgery which often ends up killing them or making them very unhealthy, or simply doesn't provide a permanent solution, seems like a reasonable idea. It isn't, IMHO.