Everytime you injure yourself, you are being healed by God, whether you believe in Him or not.
This is why Jesus was slain from the foundation of the world....so man would heal and not drop dead immediately when death entered into the world.
Rev 13:8 And all that dwell upon the earth shall worship him, whose names are not written in the book of life of the
Lamb slain from the foundation of the world.
Isaiah 53:5 But he
was wounded for our transgressions, he was bruised for our iniquities: the chastisement of our peace
was upon him; and with his stripes we
are healed.
(almost 800 years prior to the crucifixion)