Clicker-training yourself/humans?

One method is gamifying to-do lists.

Make a bunch of to-do's and add an incentive when you finish the list. Getting a treat, or a product or just a slack day to rest or free time.

First you need to deprive yourself of "luxuries" because if you have them before and after the task, there's no incentive to complete it. Avoid junk food, mindlessly playing games or watching TV.

Slowly reintroduce them in moderation as you complete tasks. Give your X hours or game time, X treats, etc.

There isn't a click sound or auditory feedback, but the fundamentals of an incentive remain for good behavior l.