Inclusion Criteria:

- Age = At least 21 years old

- Regular access to the Internet, including e-mail

- Cancer patient

- Any type of cancer (EXCEPT non-melanoma skin cancer)

- In remission from any stage of cancer (active treatment completed at least one
month prior to enrollment)

- Insomnia diagnosis (combined from DSM-IV and ICSD):

- Subjective complaints of poor sleep for at least 6 months

- Sleep difficulties ≥3 nights/week

- Difficulty falling asleep (≥30 minutes to fall asleep) OR

- Difficulty staying asleep (≥30 minutes awake in the middle of the night)

- ≤6.5 hours sleep/night

- Poor sleep causes marked distress or significant impairment in daytime
functioning (e.g. fatigue, performance deficits, mood disturbance)

- Participant feels that the insomnia was caused/aggravated by cancer or cancer
treatment

Exclusion Criteria:

- Having a sleep disorder other than insomnia (e.g. sleep apnea, RLS, narcolepsy,
parasomnias)

- Having a medical condition other than cancer that causes insomnia

- Experiencing a psychiatric disturbance (major depression, psychosis)

- Experiencing substance abuse

- Currently undergoing psychotherapy or counseling

- Changing sleep/anxiety/depression medication within the past month

- Having an "unusual" sleep pattern

- Normal bedtime is after 2am OR

- Normal wake time is after 9am

- Working as a shift worker (that is, having a schedule that requires working through
the night)

- Participants reports that she is pregnant or intending to get pregnant in the next 4
months