You don’t break a habit by just stopping. You replace it with something that scratches the same itch.

Habits persist because they are doing something for you: filling a gap, settling nerves, marking the end of a day. Removing the behaviour and leaving the need in place means the need goes looking, which is why pure stopping usually lasts about four days. What works is finding something else that answers the same question.

Take the habit you want gone and work out what it gives you. Then choose a replacement that fits the same moment, not a better one in theory. Put it in the same slot and keep it there until the slot belongs to it.