Psalm 55
Panic in the body: a pounding heart, terror, horror, and "Oh, that I had wings like a dove!" The deepest wound is betrayal by a close friend he worshiped with, whose words were "softer than oil, yet... swords." He prays morning, noon, and night. Then comes the verse about casting your burden, set right in the middle of the betrayal, not after it's healed.
"Cast your burden upon the LORD and He will sustain you; He will never let the righteous be shaken." (Psalm 55:22)
Versions/Hebrew: In 55:22, "burden" is yehav [3053], used only here, meaning "what has been given you," your lot. YLT: "Cast on Jehovah that which He hath given thee." "Sustain" is yechalkelecha [3557], to provide for or feed, as Joseph fed his family (Genesis 47:12).