We sleep better and deeper when the stomach is resting. We also sleep more refreshed if the room is quiet, dark, and on the cool side with a window partially open. If it is cold outside, then open a window in a nearby room such as a bathroom adjoining your bedroom. Sleep provides time and opportunity to discard waste products of the days work and replace them with fresh, energy-packed vitality to start the new day. It provides more potential for success and happiness.
Depression takes a beating.
Avoid heavy meals late in the day. Eat your last meal light and at least 4 hours before retiring. Do some hard physical work during the day, especially if you have a sitting job. Muscle activity actually is a sedative. Maintain a regular time for retiring.