Mind
Here is a door. You have put a lock on the door. Put the key in the lock. When you turn the key right, the lock opens. When you turn the key left, it closes. The same key, the same lock. The difference is only in turning.
Your heart is the lock, the mind is the key. Turn the mind toward the world, there is attachment.Turn the mind toward God to get detachment. For attachment and detachment, the mind is responsible. So, direct your mind toward God.
