In this issue of Sleep Medicine Clinics, guest editor Dr. Joshua Hyong-Jin Cho brings his considerable expertise to the topic of Adjunct Interventions to Cognitive Behavioral Therapy (CBT) for Insomnia. Top experts in the field cover key adjunct treatments to CBT-I such as paradoxical intention; circadian rhythm regulation; behavioral activation; exercise; intensive sleep retraining; mindfulness; acceptance and commitment therapy (ACT); and many more.