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

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

While reflecting on past relationships and learning from them can be helpful, February isn't the best time to try and gain insight.