Drug abuse has an immediate impact on the body and mind but it can also affect your future and your relationship with others. When drug use becomes an important part of your life, your relationships suffer. You would behave more violently for the access of money for your need for drug. Conflict and breakdowns in communication would become a routine. Drugs would affect your ability to concentrate and focus at work. The side effects of using drugs like a hangover feeling can reduce the ability to focus. Poor performance at job can make you lose your job.