Of course I questioned how far I wanted to take this when I started. I didn't know what it would take to make me happy, so we just have to start walking the path and see how far we go down it.
I realized I was trans-something 4 months ago and started female hormones 2 months ago. During that time I have been so much happier, felt so much more balanced, and really blossomed socially. I used to be an antisocial hermit with no friends to speak of, now that's totally not the case!
In addition, I realized today that when I'm dressed up in girl-mode, it's no longer "exciting" or "thrilling". It's just who I am, who I enjoy being, and who I'm comfortable being. On the flip-side, when I'm in forced boy-mode, it's almost soul-crushing. So I compromise most days with half girl, half boy clothes.
That's how I know this is who I really am. I could never go back to the boy I was before. If I had to suppress all of this it would probably kill me, and I can't even wrap my brain around trying.
So in summary: Give it a try and see what you think. If it's not who you are, then you'll know.