The soul goes first. You do a deal with the devil and move over to the dark side. But you tell yourself - hey, its just for a little while - my heart is still in the right place, I can return whenever I want.
Then the Mind starts playing tricks on you - convincing you that your heart is really not the best judge of how you should spend your life.
And then the heart starts to weaken. Only, the heart never leaves you - it just stops beating and you become lifeless, and all you have left is your body and a maybe a fist full of money.
Is there any way back ?