Honestly my most difficult part. For 2 and a half-odd years, I never had the courage to tell the social worker my mother took me to see. After coming to university, and after having a checkup on my appendicitis surgery I had the day I was supposed to fly out and move in, I was referred to the counselling centre. I'm extremely shy in person about my gender issues but hate lying, or not telling whole truths. But on the electronic for I was given, there were options for gender separate from sex. I put down sex as male, but contemplated for a good 15 minutes whether I should put down gender as male, or female. I put down other, and explained that I was very confused. Now the university psychologist has it i her mind, but I told her to keep it in the backseat for the time being, my sleep issues and school performance are the most critical at the moment to me. That's changed a bit in the last week, adding gender into there as well.
For you, you just have to be confident, stand up for yourself, and just let the truth flow. You'll feel much better when you do, and even better when you start to transition.
I have faith in you. Have faith in yourself