Adam was created to be the friend and companion of God, he was to have dominion over all the life in the air and earth and sea, but one thing he was not to have dominion over, and that was himself.
You will never cease to be the most amazed person on earth at what God has done for you on the inside.
Sanctification costs to the extent of "an intense narrowing of all our interests on earth and an immense broadening of all our interests in God.