Use simple words and phrases: Think from reader’s point of view. Do not imagine that everybody will know what you know. Readers will be fed up if the story narration demands scrambling for a dictionary each time they come across a big word or surfing the net for new topics that you haven’t described at least in brief. Use only simple words and phrases that everyone can understand, and when introducing a new concept or subject, explain it so they know what you’re talking about.
If your writing is atrocious, or if you just need some help getting your thoughts in order, consider hiring a ghostwriter or a professional personal historian. Celebrities do it all the time. There is also a software that allows you to type your answers into a template on your computer, thus solving the problem of less-than-perfect handwriting. Many people also choose to type directly into an online template.
Not necessarily a writer, but still want to record your story somehow? Don’t think that there’s no hope for you. Consider making audio or video recordings. Audio recordings can be especially helpful. You can take audio recordings to a writer/transcriptionist who can then type out your story in a logical order. Working closely with a writer as you verbally record your stories can be an alternative when you feel you are too close to the story.
For example, let's say you wrote, "From the age of ten, I knew I would become a concert pianist." What specific event triggered this determination? Can you describe that one event in a paragraph or two, using all the senses available to you—sight, sound, taste, touch, and smell? Using all five senses will help readers imagine the moment as if they were present with you. This vicarious act of reliving events arouses more emotion in readers than simple summary. and if you can master it, you are well on your way to writing an autobiography! Sensory description: The narrow plank felt warm and smooth beneath my bare feet. I ran its length in three strides, arms extended out from my sides for balance. At the end I took a weightless leap into eighteen inches of space. I caught a barely-there flash of metal just before I landed hard, all my weight on my front foot. Then pain like a red-hot poker jammed through my arch, and the gleaming tip of a three-inch nail as it emerged through the top of my foot. Summary: That day I jumped on a board with a nail in it and it went through my foot.
Incorporate dialogue into your autobiography to make it more personal, recommends history professor Robert Gerlich at Loyola University in New Orleans. Consider including humor when it's appropriate. For example, if you're writing about how you got lost at Disneyland when you were 10 years old and how the experience helped you learn to face obstacles, problem solve and overcome your fears, you might write, "The attendant at Splash Mountain said, 'Are you OK? Did you get separated from your family?' I quickly replied with as much bravado as I could muster, 'Nah, I'm fine. My eyes are just wet from the ride.' I didn't want her to know I was crying."