For me, I am transitioning, even though 100% of the time I don't feel female. This creates self-doubt. The reason, at least for me, for the self-doubt is that society is gender binary. We are torn across two extremes of gender. That being said, if the idea of having wide hips and breasts as a result of body changes is unappealing in any way, you should reconsider. Myself, regardless of whether I transition or not, want more of a female figure. I just feel that is the way things should have been. If your doubts are mostly related to the fear of transition and fitting into society or losing your male self.. All of us have those doubts. You will miss the male privilege, and really that is what I know I will miss. Plus you will miss your male self. There are things about ourselves that will not change with gender, however there are things that undoubtedly will.