I tend to over analyze things to death. It's an occupational hazard which pays well in my case.
Part of my doubt, along with what was a major concern of my wife, is "The cheering section" factor. Otherwise known as your support structure. In essence just how much 'encouragement' do you get from say a therapist, TG Support group, friends, perhaps even family? My wife used a variation of the Ugly Duckling story; "If you hang around with geese you may begin to think that you are a swan" (Yes, she is weird, and lovable). In my TG Support group every other member had either transitioned to full-time or were earnestly working towards it. I was the lone duck there looking to...'survive'.
Seven years later I am still looking to survive. There have been a lot of changes made starting with the inside and working their way to the outside. I still live and present primarily as male. While early on I had plenty of WTF Am I Doing

meltdowns, today if one tries to sneak up on me just one simple look in the mirror to see Joanne looking back is all that is needed to confirm my true inner feelings.
Making changes are scary with all the unknowns. The questions you drive yourself crazy trying to answer. Of course you may be hesitant. Yet I suspect in spite of any cheering section there was something deep down inside that spoke to you. After taking that step there was that voice again saying how happy they are now it is taken. Happy at seeing in time the end results of that step. Now confused over all the fuss before since most if not all that you fretted over was really... nothing or never happened. That it feels Right.
But if there isn't? Perhaps more work is needed on the inside first?