Hi Sally
I know just how you feel. I am struggling at work right now, and finding it so hard to be bright and cheerful in front of clients and other members of staff.
As for the 'sailing through gang' well, take their opinions with a pinch of salt. My mother in law insists that she 'sailed through' the menopause. But she also insists that her and my father in law have a happy marriage (even though he spends all his time away from her doing his hobby) and she also insists that my sister in law isn't 'really' gay, even though she has been happily living with her female partner for 3 years
And even if they're genuinely 'sailing through' (lucky bloody them) but for them to act so cavalier and thoughtlessly in the face of someone who is clearly really struggling makes them rather unpleasant, insensitive twats. Well, that's my opinion anyway
Just remember that one day you will recover from this peri nightmare, but they're unlikely to recover from being thoughtless idiots. Poor them, I say.