1. A maskil1 by David, when he was in the cave, a prayer.
2. With my voice I will cry out to the Lord; with my voice I will call to the Lord in supplication.
3. I will pour out my plea before Him; I will declare my distress in His presence.
4. When my spirit is faint within me, You know my path. In the way in which I walk, they have hidden a snare for me.
5. Look to my right and see, there is none that will know me; every escape is lost to me. No man cares for my soul.

Tehillim Ohel Yoseph Yitzchok (Kehot Publication Society)

Tehillim is recited by Jewish people collectively and individually, as the desire occurs to offer praise and thanksgiving to G-d; or alternitavely, in times of crisis and need, as a form of supplication, and even as a venue to express regret for sin.

6. I cried out to You, O Lord; I said, "You are my refuge, my portion in the land of the living.”
7. Listen to my song of prayer, for I have been brought very low. Deliver me from my pursuers, for they are too mighty for me.
8. Release my soul from confinement, so that it may acknowledge Your Name. Because of me, the righteous will crown [You] when You will deal graciously with me.