Trauma, depression and various other losses can cause a person to disassociate, disconnect and go into their own world.  God wants to heal those inward parts, the secret places that only He knows about.

“But God has revealed them to us through His Spirit. For the Spirit searches all things, yes, the deep things of God. For what man knows the things of a man except the spirit of the man which is in him? 1 Corinthians 2:10-11 NKJV