"One act of righteousness"
Philippians 2:8, "And [Jesus the Son of God] being found in appearance as a man, he humbled himself by becoming obedient to death— even death on a cross!"
Yes, God's own Son appeared among us sinners "as a man". And in that state of humiliation, "he humbled himself" and lived not as those who tried to obey God, but sadly failed. Jesus Christ in his experience as a man "became obedient to death".
His whole life was a life of perfect trust and obedience to God his Heavenly Father. The Father gave Jesus the work of redemption to accomplish, and he finished the work ending it in his death on the cross for our sins. His obedient life and his substitutionary death were the "one act of righteousness" (Romans 5:18) by which we are justified freely by God's grace through faith in Jesus Christ as our Lord and Saviour.
My friend, are you justified from your sins? Or are you still trying to justify yourself before God and others by your own imperfect works? Have you put your trust in Jesus Christ alone for salvation? Let me encourage you to not wait until you're better, but come to the Savior who loves you and will welcome you just as you are.