This may sound so simple.
Maybe that's why we as Christians take advantage of it.
It forgives us and cleanses us from all unrighteousness.
"If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness." (1 John 1:9)
Walking forgiven and cleansed as a righteous man or woman of God is walking in freedom.
"Blessed are the pure in heart, for they shall see God." (Matthew 5:8)
Confessing sins creates a pure heart in us.
Not just once a week. Not just once a month.
I believe if you recognize the power of this blessing you will start confessing your sins every night.
When you don't confess sins it gives the devil power over your emotions or thoughts in that area of your life.
"Confess your trespasses to one another, and pray for one another, that you may be healed." (James 5:16)
Confessing sins heals us.
Don't hold it in. Confess it to God or someone that God leads you to and be set free.