I'm with @MaMisled - I have stopped (actually stopped quite a while before turning 50) giving any kind of crap what people think about what I do (I try not to hurt, offend, harm etc, anyone, obvs)
I've embraced my grey hair. Wear whichever clothes I feel like wearing, don't worry about white, unshaven legs in summer, etc. Listen to whatever music i like. Go to whatever bands i like, have stopped pushing through books/films/events that give me no pleasure.
I get the occasional cat-call (but I suspect more of a dare-type-of-thing than a real one) and have been felt up. But I am way way way more able to call it out. I also call out bad behaviour by other people towards 3rd parties, and have on several occasions sat next to young women to give them support on public transport.
I've also started giving other people the compliments that I'd like to hear (not randomly, but maybe at the cash desk in the supermarket "i like your nails/hair/top" kind of thing).
Absolutely not missing periods, although I do miss having a defined waistline. Took a redundancy last year - didn't get many interviews which is probably based on age/salary requirements. So i used my new-found 50+ confidence and networked into a great job.
Basically trying to live my best live, while being aware that the ol' hips/knees/joints don't always want to play and that i sometimes have to call it a day even though I don't really want to - or I'll suffer for the next few days.
Happy birthday, OP - and many more of 'em
