If you want to get clean and sober then you have to take some sort of action. You are not going to change your life by sitting at home on your couch and wishing things were different. As such, if you are suffering from drug addiction or alcoholism, then you might want to consider checking into a drug detox rehab in order to get clean.
There at rehab they will give you medication in order to help you through any withdrawal symptoms that you might have. This is extremely helpful because these uncomfortable symptoms are what drive most addicts to relapse very early in their recovery. It is also likely that you will learn some things about how to live a clean and sober life if they introduce you into residential treatment while you are there.