How much of your self and your comfort level are determined by how others perceive you? Do you have friends or family members who use your male name, refer to you with male pronouns, and really truly accept you as a guy? If so, what does that do for you and how do you feel when you leave that universe and enter into a world where people see you as female? Do you have less of an urge to transition when you're in that special world, and more of an urge to transition when you're not? That is, if everyone just accepted you as male, do you think you would still want to change your body? If you think you would like a male voice or a male chest or a male whatever, why? What do you think these things would do for you? Are they a means to an end--that is, a way to get people to recognize you as male--or are they more predicated on your level of comfort with yourself, without regard for anyone else?
If you're in the middle somewhere or if you're undecided, you have to find the right questions to ask yourself (mine might not do it for you). Or just wait around and see if you ever spontaneously get to the transition-or-die stage...and that's a very unpleasant place to be if you do get there.
Well, so is Limbo.