Yet another thing that you should better avoid is smoking and drinking. If you are ignoring my advice, then you are going to be in big troubles. In this way you will destroy your health.
I believe that health is very important for you. It is really easy to destroy it, but then it is very hard, and sometimes even impossible, to rebuild it. So, that will be wise to take care about your health today. People have free will to make the choice in favor of health.