When the time comes to practice, try to detect how tired you are. If you're too tired, stretch a little in bed or shake the sleep off. Some people may want to get up first and have a cup of coffee first. This will usually keep you from falling back to sleep during practice. It is better to wake yourself up completely before starting.
Music is wonderful for relaxation and calming the mind.
Listening to external sounds can distract you from focusing inward. Also, if you listen to music before bedtime, you may be too relaxed and sleepy to practice the next morning. When you practice, make sure you have good circulation. Make sure you won't be distracted during practice. Keep your windows closed to keep noises out, unplug the telephone, turn off all televisions, radios and other noisy things.