help me please???? PLEASE?

Whether we like to see it or not, as early twenty-somethings, we're often still coming out of childhood as our brains and hormones are still shifting into their adult form. When youths (and that includes young adults) don't establish their needs (think of Maslow's hierarchy) or don't have the unconditional support they need to succeed the social emotional stages (think of Erikson's social emotional development theory), it is nearly impossible for them to achieve emotional coping strategies and positive self-esteem. That tends to lead to "hyperactivity" and destructive emotional tendencies for a simple lack of being able to cope. With your son, if he's with you, under your roof, just ask him why he's hurt, and if he doesn't open up immediately, don't expect him to, and when he finally does, listen quietly and let him know that you do understand, or if you don't that you're willing and wanting to. Give him advice and direction (including choice lines such as "Couldn't you just...?" or "Why don't you...?") when he asks for it. And it's essential that when he does or says something good, that he sees that. The best way for him to see how valuable and good he is, is for you to acknowledge those positive behaviors when they happen, and tactfully promote them. I wish you a peaceful home.

He's ad adult. You can't have him sectioned. It's very stressful to have an emotionally or mentally ill child. I can't even imagine.

You need to encourage, beg, convince him to see a counselor or therapist.