The autobiography is the longest and the fullest story about yourself. You can write it for your personal use in order to structure and perpetuate your memories. If you are sure that your life will be an interesting theme to read about, you may create an autobiography for the wider public. An autobiography covers the period from the day of your birth until today. If you think that your life journey will be a good example for others, include the information on how you have achieved your goals and success and how you got your autobiography published.
Be revealing. You don't have to be explicit, but it's important to reveal truths about yourself and your life in an autobiography. Don't let the book become a list of your accomplishments, with all the negative material carefully kept under the rug. Present yourself as a whole person, sharing talents and flaws alike, and your readers will be able to identify with you and hopefully root for you as they make their way through your story.
If you are just writing for your family, that story might be different than if you were writing your story to be read by the general public. Think about whether or not you want to change people’s names. If your life was a harsh one you may not want to include the real names of the people involved. You may also want to consider whether your life story could be written as fiction. There’s an old adage that “real life is better than fiction.” Maybe your true story could be written in fiction form making it more saleable for mass market.
Develop a central theme, main idea or thesis that clearly explains the purpose behind your autobiography. For example, your theme might be about how you overcame obstacles to become a stronger person, or it might explain why a particular passion -- such as mountain climbing or rescuing animals -- is so important to you. Back your theme with details and background information about your life experiences. For example, you might explain that your dad is in the military, so you've had to learn how to adapt quickly to new schools and unfamiliar environments. Or, you might discuss what it was like growing up in a poor, single-parent home, but how your family was always willing to take in injured or stray pets.