How to Nap

wikihow.com

Make sure there are no distractions (you won't get a world-class nap at work or school).
Make sure you have no other commitments -- an unfinished to-do list can linger on your mind and prevent you from getting to sleep.
Wear comfortable clothing, something light and soft.
When washing sheets, add a scent that you enjoy, such as lavender.
Arrange pillows and covers suitably. Make sure there are no wrinkles in the sheets, as they can cause discomfort. If you don't have a pillow, use what you can in your environment -- rest your head on your hands, use a sweatshirt, etc.
Turn off all lights, TV, music, and other distractions.
Lie down in a comforatable position.
Close your eyes and think of pleasant visions.
Relax and breath softly.