Some skills to deal with those anxieties are the core of a “survival guide” written specifically for adolescents.
{audio}http://cpa.ds.npr.org/krcb/audio/2016/11/nbr_11-28-teen_anxiety.mp3{/audio}

Perfectionism is another common source of anxiety--for people of all ages. a good way to ease those worries, suggests Jennifer Shannon, is to broaden the idea of success.
{audio}http://cpa.ds.npr.org/krcb/audio/2016/11/Perfect.mp3{/audio}
Shannon is a co-founder of the Santa Rosa Center for Cognitive Behavioral Therapy. She has also written a Shyness and Social Anxiety Workbook for Teens, and for adults, the soon-to-be-published Don't Feed the Monkey Mind.