WHAT TO TRY FIRST
The American Academy of Sleep Medicine recommends that all people with insomnia try to improve sleep hygiene by keeping a regular schedule, having a healthy diet and regular daytime exercise, having a quiet sleep environment, and avoiding napping, caffeine, other stimulants, nicotine, alcohol, excessive fluids, or stimulating activities before bedtime.
If insomnia persists, the Academy suggests psychological and behavioral therapies or medications used alone or in combination (although some organizations, like the British National Health Service, are reluctant to suggest medications because of limited benefit and important side effects).
WHAT ELSE TO TRY
If one approach does not work combining approaches may help (for example, adding a medication to cognitive behavioral therapy).
Journal of Clinical Sleep Medicine. Clinical Guideline for the Evaluation and Management of Chronic Insomnia in Adults. Published 2008.
National Center for Biotechnology Information. Cognitive Behavioral Therapy for Chronic Insomnia: A Systematic Review and Meta-analysis. Ann Intern Med. 2015;163(3):191-204. doi:10.7326/M14-2841.
National Health Service (UK). Insomnia - Treatment. Published September 2013.