How do I break a bad habit for good?

Breaking a bad habit permanently requires replacing it with a competing behavior rather than just trying to stop. Identify the trigger that sets off the habit, then deliberately substitute a different response to that same trigger. For example, if stress makes you reach for junk food, plan to take a short walk instead when stress hits. Make the bad habit harder to do by adding friction, like keeping your phone in another room, and make the replacement easier by reducing barriers. Tell someone your goal for accountability. Expect slip-ups without treating them as failure. Research suggests consistent repetition of the new behavior for at least two months is typically needed before it becomes automatic.