Addiction is characterized by a strong desire for a substance or action. Even if they don't want to, they may find themselves thinking about the substance or action all the time. Someone who is addicted to a substance or behavior may begin by using it to cope with obstacles or unpleasant situations. However, they may eventually need to consume the substance or engage in the behavior to get through the day. People who are addicted have a difficult time sticking to personal goals such as not taking a substance or engaging in particular behaviors. This can result in emotions of guilt and anguish, which fuels the need to act on the addiction. Other indications of addiction include: A person who continues to use a substance despite unfavorable health or social consequences. Higher tolerance for the substance withdrawal symptoms when not taking the substance. Little or no interest in your normal daily activities and interests. A sense of being powerless. Having difficulty at school or work, avoiding family, friends, or social gatherings.