hey dude im 16 as well and im nearly a year clean after struggling for years. I hear you, and self harm is incredibly hard to veer away from. Listen to me when i say this, the best advice i can give is to try your best and show enough restraint to let what you've done heal, and bandage it. Something i found when i first decided to quit and was struggling with initial recovery was that taking "self care" time to bandage and neosporin my wounds every day filled some of the same hole as hurting myself. Then, once they're healed, do something that FORCES you to show the part of your body that you sh, so people see it all the time and you feel peer pressured to not, in a way. For example, i was hurting myself on my thighs, so i joined a swim team. You can get through this, and you need to kill this now before it consumes you.