Good luck with that Birdie. Diplomacy might actually be effective, assuming you're dealing with someone who hasn't abandoned reason altogether. Personally, I prefer 'brutal' honesty as it has proven for me to be the only way to get at, what those who perceive as and thereby made reality the enemy, the 'brutal' truth.
Reality takes no prisoners. It is therefore with regards to reality imperative to be sure that one is on the right side at the onset. Once one has obscured ones vision of reality in favour of cherished beliefs it becomes an arduous journey to find ones way through that self-imposed fog out of the shadowland of self-delusion.
Paradise is not a place from which one is evicted by the magical elves who created it but a place one creates for oneself by understanding the nature of what such a place requires and fulfilling those requirements. Nothing worthwhile is free or easy but is a product of our appreciation for the thought, vision and effort we and others like us have put forth to realise it.
Paradise belongs to those who have made themselves its equal. But then you already knew that, didn't you?