Does self harm be a reason to go into treatment?

YES: There are all kinds of self harm. None of them reflect a happy life. Treatment with an experienced therapist is a good idea, especially since the person you have in mind hasn't solved the difficulty yet.

Research DBT Skills: Dr marsha linehan, respected psychologist credited w/developing approach 2 help teach people they "can stand" feeling distressed; they can learn 2 soothe themselves & communicate feelings, including difficult/intense feelings. Approach helps foster development of stronger sense of self. It's called "dialectical behavior therapy." linehan herself struggled w/ this: http://nyti.Ms/yxtgz8.