I was naive enough to believe that only during puberty people become that confident and aware of their sex/gender. But, what all this research and other readings I did made me realize was that I was holding a very reductionist view of gender and sex ( a biological one only! ). There is much more to it. I suppose topics like this helps us to understand that human sexuality, after all, results from an interplay between the biological, the social and psychological. It is beautiful!

Thank you for stopping by @anarchyhasnogods :)
All the best.