I was reading through the Psalms a few years ago (yes I've read through since then too...) and I found Psalms 16. I don't know why it stuck out to me but I knew right then that I had to put music to it! Here's what it says:
Preserve me, O God: for in thee do I put my trust.
2 O my soul, thou hast said unto the Lord, Thou art my Lord: my goodness extendeth not to thee;
3 But to the saints that are in the earth, and to the excellent, in whom is all my delight.
4 Their sorrows shall be multiplied that hasten after another god: their drink offerings of blood will I not offer, nor take up their names into my lips.
5 The Lord is the portion of mine inheritance and of my cup: thou maintainest my lot.
6 The lines are fallen unto me in pleasant places; yea, I have a goodly heritage.
7 I will bless the Lord, who hath given me counsel: my reins also instruct me in the night seasons.
8 I have set the Lord always before me: because he is at my right hand, I shall not be moved.
9 Therefore my heart is glad, and my glory rejoiceth: my flesh also shall rest in hope.
10 For thou wilt not leave my soul in hell; neither wilt thou suffer thine Holy One to see corruption.
11 Thou wilt shew me the path of life: in thy presence is fulness of joy; at thy right hand there are pleasures for evermore.
I only used the last verse from this Psalm. I took the other verses from another Psalm and I didn't write down which one so... oops.
These words remind me of how only God fulfills us. Nothing else can! "In his presence is FULNESS of joy!" What a great promise! When I'm lonely or discontented I always go back to this song. I hope it blesses you! Please comment down below to tell me your favorite Psalm, or one that you go to when times get rough.