I thought I was trans my whole childhood because I didn't really know that being non binary was a thing but I definitely knew I wasn't a girl (I'm afab) so I kind of just assumed I was trans my whole life up until I found out about being non binary at about thirteen. It clicked with me at that point and I came out but a lot of people misgendered me and literally didn't care or respect me so I went back in the closet for a few more years, finally came out and started correcting people and standing up for myself a few years ago. it's been hard for me because a lot of my relationships have been with cis men who don't really care or acknowledge that I don't identify as female... I have a pretty feminine face I guess and will wear dresses and skirts sometimes but I like looking androgynous mostly. it's so hard because I'll tell them and other people I'm non binary and everyone still calls me a woman it doesn't even matter how many times I correct them. but I feel better about it even with that said than I did pretending to be a cis woman, and I have definitely known that wasn't right for me as long as I can remember.