Diclaimer
I am not a therapist or psychologist, and my emphasis is on helping your teenager make positive adaptations to their life challenges.  I cannot and do not diagnose or correct so-called “pathology” or deep behavior/psychological challenges. 

"The distance is nothing; it's only the first step that is difficult. " by Marquise du Deffand

"The only way of finding the limits of the possible is by going beyond them into the impossible. " by Arthur C. Clarke