Any deed other than believing is a work, and any work for salvation earns you a reward of debt
The word of God, Romans 4:4-5:
"Now to him that worketh is the reward not reckoned of grace, but of debt. But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness."
"worketh (...) reward (...) of debt"
"worketh not, but believeth"
"faith is counted for righteousness."
Prayer is a work
The word of God, Romans 15:30:
"Now I beseech you, (...) that ye strive together with me in your prayers to God for me;"
The word of God, 2 Corinthians 1:11:
"Ye also helping together by prayer for us (...)."
The word of God, Colossians 4:12:
Epaphras (...) always labouring fervently for you in prayers (...)"
The word of God, Colossians 1:29:
"Whereunto I also labour, striving according to his working, which worketh in me mightily."
"labour, striving", "working", "worketh"
Confessing is a work
The word of God, Daniel 9:20:
"And whiles I was speaking, and praying, and confessing my sin and the sin of my people Israel, and presenting my supplication before the LORD my God for the holy mountain of my God;"
"speaking, and praying, and confessing"
A stopped mouth doesn't speak, pray or confess
The word of God, Romans 3:19:
"Now we know that what things soever the law saith, it saith to them who are under the law: that every mouth may be stopped, and all the world may become guilty before God."
"mouth (...) stopped"
God heareth not sinners
The word of God, John 9:31:
"Now we know that God heareth not sinners (...)"
It's your soul. Learn what God's word says you must do to have all your sins forgiven:
Use this link to read along: in the King James bible, the book of Romans, chapter 1 through 4. (Full copy.)