How do you know who you are?

How do you know how you really are?? After my formal diagnosis I finally realised how much I just mirror people to try and fit it. Depending on who I’m with I tend to dress like that. I don’t know my personality?? Does that make sense? I don’t know what I genuinely like. How do I try and figure out who I am? I feel like when I was younger I definitely had more individuality about me but since having kids I’ve lost so much of my identity!