We were all in your shoes at one time or another.
It boils down to this: can you continue to live as a girl or not? for most of us the answer at some point becomes NO, and the fear of transitioning fades as the discomfort of continuing to live as a female increases.
Everyone's path is a bit different, though there are many similarities. First step is to find a good gender therapist in your area. Second would be to ideally find another trans-guy to talk to locally. That was the biggest source of info, visuals, and support, in my case.
And welcome to Susan's.
Jay