“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’.
Identify your audience. To create an effective bio you need to determine who will be reading your bio and what impression you want them to have. The purpose of your bio will help identify the audience. For a job application the audience will be employers, for a speaking engagement the audience will be comprised of people interested in the topic you are speaking on.

Determine the key actions and obstacles in your story. Once you have a sense of what desire or want you want to explore in your memoir, you can identify the actions and obstacles your narrator must overcome to achieve the desire line. Obstacles or challenges will give the story stakes and motivate your reader to keep turning the pages of your memoir. You are the driver of the action in your story and a story isn’t very exciting if it doesn’t have any driving action.[4]
"I was 12 years old when my mother passed away. By the time I was 15, I had become an expert in dodging bill collectors, recycling hand-me-down jeans, and stretching a single meal’s worth of ground beef into two family dinners. Although I was a child when I lost my mother, I was never able to mourn or to let myself become too absorbed in thoughts of personal loss. The fortitude I developed at a young age was the driving force that would see me through many other challenges."

These are great tips! Especially about writing what comes to you, not the story you originally set out to write. Sometimes we’re smarter than we even know and something important is trying to come out! I also recommend checking out StoryShelter – it has lots of question prompts to get you writing about your life. See what questions get your attention and maybe do a free write around them to get the juices flowing!
As is present in the biography of a person, your place and time of birth, your parents’ views, an overview of your personality, your likes and dislikes, and important events that shaped your life should always be included in your autobiography. This will give a mental picture of your life to the readers as a sort of backdrop to the main part of the story.
Why it helps: Sometimes we avoid the most obvious—and complicated—events that have happened to us, events that inform our whole life story. Let’s say your three-sentence exercise was Loving mom who worked all the time, no dad. Never really got over lonely childhood. Maybe you could try, “I was just a kid but...” or “I tried my best but...” Was there something else that happened that prevented you from getting over your lonely childhood? Did it happen when you were a child—or later? Did it involve parents? You don’t have to know the answers to these questions. Let the pre-written prompts guide you. “Don’t think and write,” says Temes. “Just write.”
Yes, you have to be precisely honest and quite revealing and candid to write a successful autobiography. And obviously, you need to describe some hardships of your life to show how you coped with that or how it influenced you. However, we strongly advise you to describe the thing that you feel rather calm about when writing. For example, you are writing about other students picking and making fun of you at high school. If you still feel like wanting to kill them all, it would be better to avoid this topic or mention it slightly. Why so? Because your feelings will leak into the writing and make your reader feel subconsciously uncomfortable.
Build tension and suspense. Structure the narrative so that you have a series of stories leading up to the climax of the conflict. If your central conflict is trying to reach the goal of competing in the Olympics for skiing, lead up to it with stories of small successes and plenty of failures. You want your readers to ask, will she make it? Can he do it? What's going to happen next?

If the purpose of your autobiography is to pass on your story to your heirs, consider including memorabilia (e.g. pictures, heirlooms, medals, mementos, letters, etc.) and putting your story in a scrapbook format. Of course, you may not be able to copy the memorabilia that accompanies your autobiography, so you still have to think about what you intend to do with your original work and other items, such as medals or bulky heirlooms.
Write out your life timeline. Start writing your autobiography by conducting research on your own life. Creating a timeline of your life is a good way to make sure you include all the most important dates and events, and it gives you a structure to build upon. You can consider this the "brainstorming" phase, so don't hesitate to write down everything you can remember, even if you don't think the memory will make it into the final version of the book.