With the cue and reward clarified, it is possible to make a plan to change your habit. Devise a new routine to replace the old one when the cue occurs, a routine that will achieve your desired reward. Then, discipline yourself to implement the plan for as long as it takes to remold your brain's habitual response.

Is it possible to change bad habits?

Because bad habits provide some type of benefit in your life, it's very difficult to simply eliminate them. ... Instead, you need to replace a bad habit with a new habit that provides a similar benefit. For example, if you smoke when you get stressed, then it's a bad plan to “just stop smoking” when that happens.

How can I change my habits permanently?