In the moment before deciding to relapse into a bad habit, most people generally endorse some variant of the belief that "this time it will be different." No it won't. You've been down that road before -- hundreds, if not thousands, of times -- and you know where it takes you. That's because roads only go where they go. It's impossible for a fixed pathway to vary with respect to its destination. Pushing back against this irrational belief will significantly improve your chances of lasting behavioral change.