It’s possible that writing your life story could be therapeutic, offering closure on some not so bright spots of your personal history along with emotional and psychological healing. Maybe your life was just a circus act from the beginning and is funny. If writing your life story touches you while you are writing it, think about all the people you can touch when they read it.
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.