> Has anyone here had a life-changing moment and actually managed to stay changed?

A life-changing moment changes one's life by definition. Each time a person experiences one, they are changed in a way where who they were before they can remember, perhaps even look fondly upon, but know they are not that person anymore.

> Powerful story. But let's be real: after the "survivor's euphoria" fades, how do you actually keep that level of consciousness?

By living in the moment and remembering how you got there.