11 “For my life has failed in pain”. For my life is to confess You, but it failed in pain, when the enemy had said, Let them be tortured until they deny Him. “And my years in groanings.” The time that I pass in this world is not taken away from me by death, but abides, and is spent in groanings. “My strength has been weakened by want.” I want the health of this body, and racking pains come on me: I want the dissolution of the body, and death forbears to come: and in this want my confidence has been weakened. “And my bones have been disturbed.” And my steadfastness has been disturbed.
Source: The Enarrations, or Expositions, on the Psalms (New Advent)