The simple steps to writing an autobiography include reflection, outline, drafting, revision and conclusion. Writing an autobiography requires focusing on basic information -- where you were born, how old you are, and the like -- then moving chronologically through your childhood, teenage years and later years up to the present day.
According to About.com, creating an autobiography can be done in a couple of steps. To control the length of the autobiography, it is a good idea to draft an outline of the major events or periods of life to be covered. The writer may choose to spend a majority of the autobiography on his childhood, with less time covering the teenage years. An outline helps determine how much time to spend on each stage of life.
Once the outline is finished, drafting can begin. In a rough draft, the writer can seek out different themes for each stage of life, looking for one overarching idea to summarize his entire life. While an overarching idea isn't required, it often makes an autobiography more interesting for the reader. Drafting is also the stage where it is helpful to determine the appropriate length for each section and to decide whether some events deserve more attention than others.
After completing a draft, it is time to go through and revise the autobiography. Revising usually includes finding areas to omit because they no longer seem important or fit the overarching theme. This is also a good time to catch any grammatical or punctuation errors. After the autobiography has been polished, it is helpful to have someone else read it to catch any mistakes.