Dyadic Sleep Study

Inclusion Criteria: * The eligibility criteria for patients are: * newly diagnosed with stage I to IV of a GI cancer (anus, colon, esophagus, gallbladder, large and small intestine, liver, pancreas, rectum, stomach, other biliary or digestive organs) * diagnosis in the past 72 months at the time of enrollment * having a consistent sleep partner. * The eligibility criterion for caregivers is: * a sleep partner of the patient or partner who wish to resume sleeping together with the patient * Additional eligibility criteria for both patients and caregivers are: * Pittsburgh Sleep Quality Index (PSQI) ≥ 5, * willing to change sub-optimal sleep habits, * 18 years or older, * able to speak/listen English at the 8th grade level for intervention sessions, * able to read English or Spanish at the 8th grade for self-reported questionnaires, * \> 4 weeks after surgery, if any, prior to enrollment, and no surgery planned in the next 5 weeks during the study period because surgery affects sleep. Exclusion Criteria: * Exclusion criteria for both patients and caregivers are having had a diagnosis of major depressive disorder, psychosis, or bipolar disorder that is not currently treated; * Active suicidality, or substance or alcohol dependency in the past year; * Currently have narcolepsy, restless leg syndrome, or untreated sleep apnea that is screened using the Sleep Health Screen; * Both patients and caregivers have an extreme chronotype, or do shift work to have no overlap in sleep schedule between them; and plan trans-meridian travel during the period of data collection blocks; and having hearing or visual impairment, dementia, or cognitive dysfunction. * Adults unable to consent, individuals who are not yet adults, pregnant women, or prisoners will be excluded.