CBTI-CS: A Novel Cognitive-Behavioral Treatment for Insomnia in Cancer Survivors

Inclusion Criteria: -≥ 18 years of age * History of a cancer diagnosis * No active cancer therapy (excluding chemoprevention) in the past year, and no cancer therapy planned in the next 6 months * No surgery planned in the next 6 months * Significant insomnia as evidenced by an Insomnia Severity Index score ≥12 * Able to read and write in English * Willing to attend study group sessions * Motivated and able to follow the demands of the CBTI-CS program, to keep sleep records, complete self-report symptom reports and make changes in their sleep schedule, including restricting their sleep. Exclusion Criteria: * Survivors who report ever being diagnosed with Bipolar Disorder will be excluded. * Survivors who report ever being diagnosed with a Seizure Disorder or have experienced a seizure in the past 12 months will be excluded. * Intention to adjust (decrease or increase) use of sedative, hypnotic, or over-the-counter medications that can affect sleep during the study period. * Have diagnosed, untreated sleep apnea, or sleep apnea suspected by a physician but which has not been evaluated, or other sleep disorder * Employment that involves irregular sleep patterns, such as shift-work or frequent long-distance travel that involves adjusting to different time zones, or employment in a position that could impact public safety (such as operating heavy machinery) * Refusal to modify or reduce excessive alcohol use that is likely to interfere with an individual's sleep.