Worrying about not sleeping may actually be more harmful than not sleeping. While chronic insomnia is a matter for discussion with your doctor, the sleep specialists at the Mayo Clinic say that one night of missed sleep here and there will not be ruinous to your health. Instead of fretting, which can raise stress hormone levels, try lying quietly and counting your blessings, which will put your mind in a more relaxed state. Watch for excessive pre-bed stimulation, including looking at the computer screen. The artificial light source can throw off your body’s biological clock and delay the onset of sleep.