1. By David. Bless the Lord, O my soul; and all my being, His holy Name.
2. My soul, bless the Lord; forget not all His favors:
3. Who forgives all your sins, Who heals all your illnesses;
4. Who redeems your life from the grave, Who crowns you with kindness and mercy;
5. Who satisfies your mouth with goodness; like the eagle, your youth is renewed.

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. The Lord executes righteousness and justice for all the oppressed.
7. He made His ways known to Moses, His deeds to the Children of Israel.
8. The Lord is compassionate and gracious, slow to anger and of great kindness.
9. He will not contend for eternity, nor harbor ill will forever.
10. He has not dealt with us according to our transgressions, nor requited us according to our sins.
11. For as high as heaven is above the earth, so has His kindness been mighty over those who fear Him.
12. As far as the east is from the west, so has He distanced our transgressions from us.
13. As a father has compassion on his children, so has the Lord had compassion on those who fear Him.
14. For He knows our nature; He is mindful that we are but dust.
15. As for man, his days are like grass; like a flower of the field, so he sprouts.
16. When a wind passes over him, he is gone; his place recognizes him no more.
17. But the kindness of the Lord is forever and ever upon those who fear Him, and His righteousness is [secured] for children's children,
18. to those who keep His covenant, and to those who remember His commands to do them.
19. The Lord has established His throne in the heavens, and His kingship has dominion over all.
20. Bless the Lord, you His angels who are mighty in strength, who do His bidding to obey the voice of His speech.
21. Bless the Lord, all His hosts, His servants who do His will.
22. Bless the Lord, all His works, in all the places of His dominion. My soul, bless the Lord!