How does confessing your sins heal you?

"Confess your trespasses to one another, and pray for one another, that you may be healed. The effective, fervent prayer of a righteous man avails much (James 5:16). "

Does this verse support things like confession booths and asking God to forgive our sins?

What can this verse teach us about God's relationship with us?

Resources:

https://96tolife.blogspot.com/search?q=Confession&m=1

https://www.livinggodministries.net/living_god_ministries/radio_archive/audio_files/forgiveness_of_sins_9.mp3