This “teen” isn’t a child; he’s 18 and admitted that he tried to kill his mother. He stabbed her something like 17 times.
Obviously his “self esteem” was so badly hurt that if momma doesn’t like something about him, the acceptable recourse is to try to kill her. Wonder where he learned this? (Yes, that’s rhetorical.)
Fortunately, she will survive. Otherwise he would be an orphan!