Here are some books for teens to learn more about mental emotions -

• A Relentless Hope: Surviving the Storm of Teen Depression
  by Gary Nelson
  
  
• Behind Happy Faces: Taking Charge of Your Mental Health
  by Ross Szabo and Melanie Hall
  
  
• Beyond the Blues: A Workbook to Help Teens Overcome Depression
  by Lisa Schab
  
  
• Conquering the Beast Within: How I Fought Depression and Won... and How You Can, Too
  by Cait Irwin
  
  
• The Disappearing Girl: Learning the Language of Teen Depression
  by Lisa Machoian
  
  
• Monochrome Days: A First-Hand Account of One Teenager's Experience with Depression
  by Cait Irwin
  
  
• Rescuing Your Teenager from Depression
  by Norman Berlinger
  
  
• Understanding Teenage Depression
  by Maureen Empfield, MD and Nicholas Bakalar

• When Nothing Matters Anymore: A Survival Guide for Depressed Teens
  by Bev Cobian, RN