Sometimes I want to hurt myself
Do you think hurting yourself will help you solve any problems you have?
It is a habit and I want to feel better
Sometimes people try to hurt themselves because it distracts from problems that they can't face head on.  If you are feeling this way often, you should talk to someone.  They can help you avoid actual physical harm, and also make a plan to deal with the bigger issues.
I'll be fine.
You think that way now but that problem of yours will get worse. Prevention is the best policy, find help now before it is too late.