A 2007 study in the journal SLEEP found that the more hours a person works, the less sleep he or she gets. Workaholics take note: Burning the midnight oil is not the way to the top of the corporate ladder. Lack of sleep can contribute to poor performance, lower your ability to cope and increase your stress levels. Sleep helps you recover from a tough day at work. If you have a tough time turning off at night, schedule at least an hour of downtime before bed. Take a bath or read a book that has nothing to do with your work. Whetever you do, do not bring your Blackberry or laptop into your bedroom. A 2011 poll by the National Sleep Foundation found many Americans may be sleeping poorly because they spend the hour before bedtime in front of the electronic glow of a television, phone or Blackberry, or computer. Want more ideas? Check out these 30 tips to get better sleep.