Tossing and turning can be a terrible waste of time, and leaves you feeling awful the next day. If you're trying for a better night's rest, conduct a "nighttime audit" where you evaluate your activities before bedtime to see what's keeping you up.
Photo by peasap
Examine how you spend your time at night, from when you arrive home up till you go to bed. You may find time you waste on silly things that can be better spent sleeping. You may also find that some activities are too stimulating or stressful, and make it difficult for you to sleep. Even long after you're done with them, they may keep you up past your bedtime. (If you're looking at a screen late at night, use Flux to minimise the effects of backlit technology.)