Col3:3 For you have died and your life is hidden with God in Christ.(esv)
Our lives are hidden in Christ. The reason why our lives are hidden in Christ is because our spirits has not connected with his spirit. Or maybe it could be because of sin is in our lives. Some times he will hide our spirits to develop our potential. He also loves to hide treasure within us so he can draw it out. Besides if our spirits are hidden we are not fully serving him we are just spectators in his kingdom.