Web-based Insomnia Treatment for Adolescent and Young Adult Cancer Survivors

Inclusion Criteria: * 14-25 years of age * History of a cancer diagnosis * No active cancer therapy (excluding chemoprevention) in the past three months, and no cancer therapy currently 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 * Has internet access at home * Motivated and able to follow the demands of the SHUTi program, to keep sleep records, complete self-report symptom reports and make changes in their sleep schedule, including restricting their sleep Exclusion Criteria: * Prior attempt(s) to treat insomnia using cognitive-behavioral treatment for insomnia * History of Bipolar Disorder diagnosis * History of a Seizure Disorder diagnosis or have experienced a seizure in the past 12 months * Intention to adjust (decrease or increase) use of sedative, hypnotic, or over-the-counter (e.g., Benadryl, Unisom) medications that can affect sleep during the study period * Diagnosed, untreated sleep apnea or sleep apnea suspected by a physician but which has not been unevaluated, 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