Welcome to SR Breugal
There are many differing theories as to why people drink more than others. A lot of it could be down to your physiological make up and not down to environmental factors. That was something I came to accept with myself anyway because I knew that whatever I changed in my life the drinking was the one thing that stayed the same. Although interesting, it isn't actually something you need to understand in order to do something about however. Maybe just concentrate on what you need to help you stop for now. You'll find lots of help and support here x