How to narrow topic for literacy autobiography

I've been thinking a lot about my experiences with reading and writing, in order to find a focus for my literacy autobiography. It's been a struggle. I have been reading since I was five and I haven't stopped. In *^* years I have read hundreds, if not thousands of novels, memoirs, magazines, essays, plays, literature, poems, blogs, etc...which makes it difficult to focus on any one experience or to even discuss my experiences chronologically because they are so vast. I read, all the time. I only watch T.V. when Dexter, Shameless, and Homeland are on. During the weekend, I may watch a movie or two. The rest of the time the t.v. is off and I am reading. I find reading so pleasurable that I often wish that I was stranded on a deserted island, (with electricity and a fully functioning bathroom), with all of the books that I want to read, a hammock, a warm quilt, a Mr. Coffee maker, two tons of coffee grounds and plenty of 1/2 & 1/2. That would be heaven! Then reality slaps me across the face and I'm reminded of the homework I must complete, the papers I need to write, the work I must do with my own students, and the realization that I've selected a career that requires a great deal of reading that is both interesting and difficult. I have learned so much in this class in the past couple of weeks. I have learned about the mistakes that I make with my own writing. I was never taught to 'brainstorm' or 'freewrite.' When I was in grade school there was no such thing as graphic organizers, and we never kept journals. As a result, when I sit down to start a paper, I often struggle for hours just to come up with a thesis statement. I strive for perfection during the first draft, and I don't spend enough time revising, because by the time I'm done with this sort of writing process, I don't ever want to read the paper again. I know better than this. I teach my students the very skills that we are learning about. Old habits are hard to break but I am going to use the tools that I am learning in our class to hopefully eliminate some of the anxiety that I go through when writing. As an aspiring writer, it's about time that I take my writing more seriously. How can I be a successful instructor if I don't practice what I preach!