Jacqueline Sperling, PhD, is a clinical psychologist, faculty at Harvard Medical School, and the co-founder of and the Director of Training and Research at the McLean Anxiety Mastery Program at McLean Hospital. Dr. Sperling specializes in implementing evidence-based treatments, such as cognitive-behavioral therapy, and working with youth who present with anxiety disorders and/or obsessive-compulsive disorder. She also focuses on providing parent guidance by using treatments, such as behavioral parent training, to help families address children's internalizing and externalizing behaviors. Anya Kuvarzina graduated from Central Saint Martins College of Art and Design and earned her MA from Goldsmiths University. She teaches Graphics & Illustration at CSVPA college, blogs about illustration, and makes animated gifs for Instagram. She lives in Cambridge, UK. Visit treesforanya.com, @TreesForAnya on Facebook, Twitter, and Instagram, and @anyakuvarzina on Pinterest.