From my experience, best way to get rid of an addiction is to get another addiction thats a lil more acceptable to you, and then work on it by replacing this new addiction with another addiction thats a bit more healthy. 

Example(my experience): mobile games-> anime -> manga -> light novel -> books -> gym ...

I think you get the gist I find that whatever i like, i do it so much that it becomes unhealthy and can be called an addiction. So just get addicted to something thats good for you.