ive always been hurting myself

When I was a kid I used to purposely fall onto concrete just so my knees would bleed. When I was ten, I was making a cup of tea so I boiled a cup of water in the microwave. I took the cup out the microwave and instead of grabbing the tea bag, I walked over to the sink and poured the hot water on my hand. I got a pretty bad burn. Middle school was the first time I actually put a blade against my skin. It took 2 years for those scars to fully fade. Last october I started cutting again. In December, I cut myself and there was a lot of blood. The sight and the feeling of the blood dripping down my thigh made me faint so I decided to quit. Ive been on and off cutting myself since and im 22 days clean at the moment.