I told a friend the same time I told myself. I came home from a conference knowing something was wrong. As I described how I'd felt there, and started to state what was bothering me I ended up crying. My friend was amazing, told me it was ok to be confused and would be ok if I was a boy. I remember being so mad at myself for not knowing. My friend was the one who reminded me that gender isn't always obvious and I'm still young (21 at the time). A few weeks of research later and I'm at my GP telling them I want to transition.
Now, not even nine months later I'm on T, legally male on my DL and passport, surgery scheduled for Jan 4th and with that will be able to finish updating my identity documents (birth certificate & social security). I've been open with everyone since that first friend, and have even worked with him on building H.A.V.E.N., a program to reduce homo-/bi-/trans- phobia in the college environment. I'm finally me, a transmale gynandromorph, and its good to be me