How do you manage to fall asleep after going to bed? Do you use for that relaxation techniques, and which?

Unfortunately I can’t fall fully asleep. However because I am always tired, I can have a nap immediately.  To really relax – I do Zen. I stop the music, I  stop to think, just empty my head, then I can hear the sound (voice) of the sea.

Question submitted by Félicien, Orléans, France