Starlee:
"... their mind/soul/psyche, whatever you call the essence that makes them 'them' ..."
One of the most useful functions the internet serves is to remind us of the unthinking ignorance and associated prejudices of so many of our fellow citizens.
This poster Starlee, for instance, probably thinks such talk of 'the essence that makes them 'them'' is uncontrovertible and universally accepted. Not the least smidgeon of knowledge of the difficulties inherent in such talk. No thought of Aristotle, Aquinas, Hume ... no inkling that other metaphysical traditions (Buddhist? ...) might take a different stance ... no knowledge, even, of Ryle, say, or other more contemporary thinkers closer to home.
And why should there be? It seems so obvious this is how things are. Hey, Starlee?
All you straight-up Cartesians (look it up, Starlee!); some of us think you are wrong. But, really, we do not need to argue the case. All that is important is that we do not allow such ignorance and associated prejudice influence over our institutions -- schools, laws, health services etc.
We do not allow believers in the Angel Moroni to determine what we teach our kids and so on. (Unless, maybe, we live in Utah.) We allow believers in Transubstantiation to practice their rites freely, while denying their right as a group to proselytise our children or influence our foreign policy. And so on.
Same for believers in independent 'essences' of people like Starlee and all the rest. (Or it should be.) We have good reason to believe them to be flat-out wrong: but, well, let a hundred flowers bloom, fill yer boots, Starlees. Just stop with the demands that the rest of society fall in with your nonsense.
Starlee and co: try to consider other points of view; read David Hume, Gilbert Ryle, Derek Parfit ...; think!
And, whether or not, just stop with your demands to medicalise children on the basis of your nonsensical metaphysics. Just stop. Enough is enough.