Getting enough sleep is good for everything ranging from weight, to mood, to even the immune system. One of the simplest things you can do to ensure you get enough sleep each night is to set a bedtime. Forgive yourself if you can't meet it every night (I tell myself I need to be in bed by midnight, but life gets in the way, and all of a sudden it's 1:30 a.m.), but make a point to try to stick to it.