Many people will not be aware of their own behaviours, a family member will normally spot that the person is acting out character. It can start with, being awake all night and sleeping all day, acting different as though they are irritable and discontent, having bouts of anger or depression. Lying, steeling. They can appear to be on top of the world one minute and very down the next. Strong forms of denial can happen when challenged on any behaviours . Always try to be as patient and tolerant as you can with your loved one try to remember addiction is an illness and the person needs to be treated like a sick person. But it also important not to enable these behaviours at the same time.