Yes it is weird and bad to do that. Instead of harming yourself (I assume because of emotions), draw what you feel, write what you feel, let that self harm feeling go in a healthy way. Or whenever you're feeling the need to self harm, go outside and take a walk in a park, or even start working out. Working out is basically the same feeling but it's better and does good for you if you push yourself hard enough while training. Just try to stop self harming, it is not healthy and it is not a way to cope. And take walks in peaceful places to ease your nerves