anything that is inflicting harm to you and your body is considered self injury. It can be as simple as taking a bath in water hot enough to cause the body to turn red and painful, pulling out your eyebrows and eyelashes during times of frustration to hitting biting pulling hair, punching walls, hitting yourself with hand or other objects, scratching out of anger and frustration or to feel pain, cutting yourself with fingernails or an object such as a knife safety pins, needles, anything with a sharp point.