How do I stop self harming -if it's a addiction- without telling someone?

Self harm won't make the pain go away, I've tried it many times and I realized it only makes things worse, it only makes the pain go away for awhile but it doesn't help, trust me, your only going to feel regret and anger with yourself if you continue

I started by trying to reduce the amount of times I did it each week, and replacing it with something to distract myself from the feeling. For example, if I had the urge to cut, I'd bake some cookies instead or go for a run. Obviously the addiction doesn't go overnight and you may still relapse a few time but overtime you find other ways to cope with the feeling that work for you.

It'll be harder to overcome it without telling people. Could you tell someone online even (like on 7cups)? Having someone, anyone, there to be a motivator for you (even someone online!) will help you a whole bunch because you'll have someone to talk through it with you when you feel like self-harming. That's my number one recommendation. If you don't feel comfortable telling people online then maybe you could have reminders and other reasons to not self-harm. Something like "my dog would want me to be my healthiest and not self-harm" and that could work for "my friend wouldn't want me to...", "my parents wouldn't want me to...", etc. That way you still have the motivation without people having to know!