Between childhood and adulthood, all human beings commit sins that require repentance. Unconfessed sin from any time of life can stand as a barrier to healing and revival. Read the account of a dead girl and a sick woman in Mark 5, and let the Lord speak to your heart today: Jesus wants to heal the adult you have become and bring the child you were back to life.
Here is a trustworthy saying that deserves full acceptance: Christ Jesus came into the world to save sinners—of whom I am the worst.--1 Timothy 1:15
...I pray that the eyes of your heart may be enlightened in order that you may know the hope to which he has called you, the riches of his glorious inheritance in his holy people, and his incomparably great power for us who believe. That power is the same as the mighty strength he exerted when he raised Christ from the dead and seated him at his right hand in the heavenly realms... --Ephesians 1:18-20