My sister hated her name! Officially she was Gillian but she preferred Gill. Anyone who met her after she was about eighteen knew her as Gill but in the family she was always Gillian. I don't think I've met many Gillians who are younger than me (although I've heard of some) and I think of it as a name of the 1940's.
I can't imagine having any name other than the one I've got. Mary. I don't know any Marys younger than me, or rather I don't know any younger women who use the name Mary. I baptised several girls who had Mary as a middle name, often because that was Granny's name.
I came across a fascinating site recently where a researcher had asked people what characteristics they associated with various names. Here's the word cloud for the expectations of a Mary.
Does it match your expectations? I'm happy to be thought of as dependable and happy rather than confrontational and grumpy.
If you fancy checking out your own name, here's a link. The list is rather limited but you could look for family and friends.