Adolescents face challenges in finding their identity as they try different roles. They experience confusion over who they should be. The main tasks of adolescence include dealing with conflicts with parents, peers becoming more important, and mood changes. Adolescents are influenced both by their parents and peers, though studies show they cannot be influenced by both. Risky behaviors like smoking increase as friends' influence grows during adolescence. Around 39% of adolescents suffer from low self-esteem, which tends to drop during ages 9-13 and again from 18-23. When life becomes difficult, some adolescents make wrong choices that make them feel guilty.