During the time I spent in retreat, I encountered this prayer from Dietrich Bonhoeffer in The United Methodist Hymnal (689).  I have updated some archaic language and I plan to use it before going to bed. I wanted to share it with you.

O Lord my God, 
I thank you that you have brought this day to its close.
I thank you that you give rest to body and soul.
Your hand has been over me, 
guarding me and preserving me.
Forgive my feeble faith 
and all the wrong I have done this day,
and help me to forgive all who wronged me.
Grant that I may sleep in peace beneath your care,
and defend me from the temptations of darkness.
Into thy hands I commend my loved ones,
I commend this household,
I commend my body and soul.
O God, your holy name be praised. Amen.

The United Methodist Hymnal (Nashville, TN: United Methodist Publishing House, 1989), 689.