The single best thing that helps me consistently to get restful enough sleep that I wake up feeling refreshed the next day is to be OUTSIDE (not just indoors in bright light, but actually outside in daylight) doing aerobic exercise such as walking or biking somewhere where I need to be to accomplish some task. (We chose our housing location to be near a city trail so that we can walk or bike to the public library and to the bank and to much of our shopping. Our son who attends the local high school can walk or bike there too.) Generally, people who get outside (for light exposure to reset their biological clock) and exercise (for physical tiredness and mental relaxation) sleep fairly well. As DanBC correctly points out in his top-level comment, you may need medical advice for persistent insomnia, but if what he advises and what I advise here works for you, great. Good luck.