Here are some inspiring books that are popular among teenagers:

"The Alchemist" by Paulo Coelho

"The Fault in Our Stars" by John Green

"Wonder" by R.J. Palacio

"The Hate U Give" by Angie Thoma

"To Kill a Mockingbird" by Harper Lee

"The Perks of Being a Wallflower" by Stephen Chbosky

"The Book Thief" by Markus Zusak

"The Giver" by Lois Lowry

"Eleanor & Park" by Rainbow Rowell

"I Am Malala