Self-injury is a way of dealing with very difficult feelings that build up inside. People deal with these feelings in various ways. Here are some examples: Cutting or burning themselves, bruising themselves, taking an overdose of tablets, pulling hair, or picking skin. Some people think that the seriousness of the problem can be measured by how bad the injury is. This is not the case - a person who hurts themselves a bit can be feeling just as bad as someone who hurts themselves a lot. Self-injury can affect anyone. It is a lot more common than people think. Many people hurt themselves secretly for a long time before finding the courage to tell someone.