First, do something different. When you are really colorful, you don't have time to do this by hand when you are busy. So you should take action, take part in more active activities, or set a goal for yourself, and use your leisure time as much as possible to make money. This may give you more motivation to move.
Secondly, you should exercise in your hometown. Exercise will strengthen your physique, and sweating will keep those messy things away from your mind, thus avoiding frequent use of your hands.
Third, stay away from these film and television works, colored novels and so on. And see as many positive things as possible. If you are used to the rhythm of life mentioned in the above small series, you will not use your hands when you have no time to think about which one. Stick to it and believe that you can. After a year and a half of abstinence, you'll find that it's good not to use your hands!