"Being a top performer - whether it's in business or on the athletic field - requires grit and tenaci..." — Amy Morin

Sleep deprivation impairs everything from your motor skills to your reaction time.

Lack of sleep greatly impairs your ability to make good decisions.

The quantity and quality of your sleep plays a major role in your ability to learn new information.

Feeling sad or lonely isn't a bad thing. But those emotions increase the risk that you'll cross the line into self-pity.