It is not about you specifically answering this question, let alone confessing to it in public.
Wouldn't it be a rather relevant question to ask oneself what your own answer would be, as your worldview as a facilitator may somehow influence the process of the client?
Or, as Tania said in her presentation for 'Ze fruitcake' group:
" ...the practices of inquiring into the self are as old as humanity. Our imagination is perhaps our only true faculty. The history of self is made up of a succession of models that do not resemble one another in their essence. We construct and shape our understandings like we make up our life stories, and these in turn serve us well. Hence our understandings are the fruit of our imaginations, bound up in other imaginings."
If brain and life are inseparable, how would you address, e.g. a pre-conception memory, as there would be no physical basis for it (unless we were to inherit concrete information through our DNA)?
I once heard a facilitator say: "What were you wearing in a former life?": this can never refer to a real episodic memory. All a person can know about a previous life, if any, is from stories told by others or made up by themselves.
You know it isn't 'real' because there is no perception of the external context attached to it (unless you made that up as well; would the brain be able to distinguish them? E.g. someone who lies tends to add less detail, see elsewhere on the forum).
I suspect it will be rather different to cure someone from suffering from a real memory than one they imagined or took to be true. I remember David trying to find the right question to address something he suspected didn't really happen to the client (being 'stoned') and managed to find out it was from an episode of "The Life of Brian".
Who is the owner of a memory?
How healthy is it not being able to distinguish between what really happened to you and the things you imagine?