אֲֽנִי־אָ֭מַרְתִּי יְהוָ֣ה חָנֵּ֑נִי רְפָאָ֥ה נַ֝פְשִׁ֗י כִּי־חָטָ֥אתִי לָֽךְ׃
As for me, I said: 'O LORD, be gracious unto me; heal my soul; for I have sinned against Thee.'
Read kabbalistic (mystical) interpretation of Psalms 41:5: and classical mystical sources.