21stcentury acceptanceandcommitmenttherapy adolescent adolescentpsychology americanliterature anxieties anxiety anxietydisorders anxietyinadolescence bashfulness behaviortherapy childpsychology clinicalmedicine cognitivebehavioraltherapy cognitivetherapy cognitivetherapyforteenagers comorbidity conversation culture depression depressivedisorder diseases education educationandstate epidemiology equality etc ethnology evidence-basedmedicine evidence-basedpractice evidenz-basiertemedizin exercises fitness friendship general globalization graphicnovels handbooks health highschools highschoolstudents history historyandcriticism informationsuperhighway inmotionpictures intellectuallife internalmedicine internationalorganization internationaltrade juvenileliterature kognitiveverhaltenstherapie manuals medical mental methode methods mexicanamericanauthors mexicanamericans mexicanamericansinliterature mexicanamericansinmotionpictures mexicanamericansinpopularculture middleclass modern médecinefactuelle newyorktimesbestseller newyorktimesreviewed nyt:combined-print-and-e-book-nonfiction=2020-10-25 obsessive-compulsivedisorder parentparticipation personalgrowth phobias phobicdisorders phobiessociales popularculture post-traumaticstressdisorder problems problemsexercises psychology psychopathology racismineducation schoolchoice schools self-help socialaspects socialphobiainadolescence sozialangst theory therapy thérapiecognitive traitement treatment unitedstates worldhealth worldpolitics youngadult youngadults