An addiction is an inability to stop an activity or behaviour, even if it is causing physical or psychological harm. A simple addiction, like needing a coffee first thing in the morning, is generally regarded as normal – even though it’s a sign that the body lacks energy. But if you can’t live without it, it’s still an addiction. More damaging and serious addictions, like alcohol, drugs, gambling, or pornography, cause terrible damage to the user, their family, and their community.