Christians: if Christ is your ultimate moral foundation, then your ultimate moral foundation is in your head?

In your head, in your head, zombies, zombies, zombies… Christ is a delusion that doesn’t exist in reality. There is a book of stories about Christ that few Christians ever read, but Christ doesn’t exist here in this reality. Instead, deluded people claim they feel him or see images of him in their toast, but ultimately, if Christ is your moral foundation, then you might as well just make up your morals as you go – just do whatever feels right, right?