@Sophia:

It will affect everyone in different ways, but for what it's worth, here are my experiences.

I have found myself more confident and extroverted in general since I've accepted being to some extent trangender.
One way this shows up is that I'm more willing to talk to random strangers (men and women) in guy and girl mode.
Unfortunately, I'm still no better at talking to cute girls D:

I think the "why" of it for me was just the relief of acting on something I'd had in the back of my mind for so long.