Participants are randomly assigned to receive either treatment as usual (TAU) or TAU plus YST for 3 months. Adolescents who receive TAU plus YST nominate three or four adults from their family, school, and community settings to function as support persons. The support persons participate in a psychoeducation session that focuses on the adolescent's psychiatric disorder(s), individualized treatment plan, importance of treatment adherence, and suicide risk factors. They also maintain regular contact with the adolescent to support treatment adherence and progress toward treatment goals. Adolescents have assessments at 6 weeks, 3 months, 6 months, and 12 months. Internalizing behavior problems, perceived social support, treatment adherence, adaptive functioning, severity of depression and anxiety, severity and frequency of suicidal thoughts, and suicide attempts are assessed.