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.
“Talking about the past can have a healing function, but what we find is that talk, literally, is cheap,” Dr Hunter says. “We speak words and they fly away before we’ve faced what it is they convey.  This is not the case with the written word.  Writers find themselves saying, ‘ I never really thought about it before’ or ‘ I never saw it this way until I started to write it’.
Now, it’s time to think on how to conclude an autobiography. Your conclusion has to be strong and impressive. Mention what lessons you’ve learned and what changes in your life you’ve witnessed thanks to the described episode of your life. Even if this event has had negative consequences, you shouldn’t hide anything. Bad experiences are also useful for personal development. As Theodore Roosevelt once said: “The only man who never makes a mistake is the man who never does anything.”
Limit it to 15 minutes, no more – at least at first. Fifteen minutes, three times a week, always at the same time and always in the same place. Stay there for all 15 minutes even if you can’t think of anything to write.  This will set up a rhythm, in the same way we get hungry at mealtimes whether or not we’re really hungry. This isn’t just about finding time to write your life story.
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."