If you only drink in company but don't want to, realize that this urge comes from outside. Why is the outside controlling you and brings you into a situation that you don’t want? Be strong in yourself.
Addiction is mainly a question of the mind. People can spend half a day on a flight without any cigarette but on the ground they cannot survive an evening without smoking. If you can spend half a day without it, it is also possible a full day, a week, a month, a year or the rest of your life. It is a question of the mind and the determination.
When shopping becomes an addiction like gambling, when your house gets more and more full, when you walk in the city and realize that you already have everything in those shops full of useless things, it is time to rethink on what you spend your money.