YOU NEED SOME PROFESSIONAL HELP QUICKLY!
Seek a psychologist. They have meds for this kind of behavior.
Why do i enjoy hurting myself?
Because you are a moron.
Sadly, it provides a form of distraction and a sense of relief from the sting of emotional anguish. And the anguish is so great that by comparison physical pain is preferable. Perhaps that is why one self-injurer described hurting oneself as “medicine for my fears.”
Whenever i can't get what i want i get angry and because i can't hurt anyone i start hitting myself. I start slapping myself until i feel satisfied, even when i was in high school, when i feel nervous or angry i always cut myself using my nails. And recently i want to choke myself by eating a lot of food without drinking water. Why do i keep on thinking about killing myself and end up hurting myself instead?
Beginning of masochism?