Prayer. Liturgy of the Hours is 2000 years old and based on the Jewish tradition of praying 7x/day.
Compline is night prayer before bed.
Protect us Lord as we stay awake and watch over us as we sleep, that awake we may keep watch with Christ and asleep rest in His peace.
Into your hands I commend my spirit...
And so forth.
It brings me peace and for me is very effective. Regular practice adds a focused importance to the end of the day and has added an aspect to going to bed apart from just being tired and needing rest.
Universalis: Compline (Night Prayer)
-Tim-