I can't tell you what to do, but I can give you my life experience and observations as options to consider.
I have always excelled in administrative positions. Before I had to take time off to prepare emotionally for the pre-op process, I was in-training to be Head of Human Resources at a fledgling multimedia company (who's name I will leave out as a proffessional courtsey.) In the military I managed a tool room, organizing the training manuals and did sorting and polishing of the tools. I have been in housekeeping and culinary positions like a baker and have tutored "special needs" children as well. I was the primary floor stocker for girl's toys and worked customer service on the floor at Toys R' Us. Before I joined the military I was a psych major, dishwasher, and cook. In grade school I was a library volunteer and loved to sort the books and file things.
I am also a self-employed independant author, and freelance columnist from time to time. (Communication skills.)
Another transgender I knew was a manager at Wal-Mart and stocked shelves. All others were in some sort of cashier or in sales of some kind.
Basically, I have found most MTF transgenders to make a living out of their natural motherly and nesting abilities, which includes good communication skills and gently putting things in their place. Guiding others (Human Relations, psychology, tutor), cooking and baking, cleaning (housekeeper/janitor), organization/sorting (tool room and toy stocker) are how it translated out for me.
If you're the motherly type, look at everything a mother does and ask yourself: how can this translate into a job skill? Be creative and learn how to spin everything you're even remotley competent in to a transferable skill.