If the project becomes too much for you at any point, remember that writing an autobiography takes time. Take the pressure off. Relax. This is your autobiography. You can make it as brief or as complete as you like, but don't expect to write it quickly. It may take years. If you want to finish fast, you might try the $14.95 Memorygrabber software I mentioned early. The publisher offers numerous free downloadable pages on their website, so you can decide if that approach will be useful or not.
Come up with a title. It should match the tone and style of your book, in addition to being attention-grabbing and intriguing. Keep the title short and memorable, rather than wordy and difficult to grasp. You could title it with your name and the words "My Autobiography" or choose something less direct. Here are some famous autobiography titles that perfectly capture the stories inside:

Understand the memoir genre. In a memoir, you are the main character of your own life story. Many memoirists use the facts of their life story to create an engaging tale for the reader. Because you are relying on your own memories as source material for the story, you may end up describing things differently than others might remember it. The key is to write down things as you remember it, in the most honest way possible. Keep in mind memoirs are different from autobiographies in that memoirs should only cover certain key aspects of your life, not your life from birth until the present day.[1]

Create a plot outline. Though you are writing a memoir, following the principles of fiction, such as a plot outline, can help give your book form and shape. It can also make it easier for you to organize your research materials in a way that is engaging and interesting for your reader. A story’s plot is what happens in the story and the order it happens in. For there to be a story, something has to move or change. Something or someone goes from point A to point B due to a physical event, a decision, a change in a relationship, or a change in a character or person. Your plot outline should include:[6]

You may wonder how to start an autobiography introduction. The answer is simple: the same way you start other essays’ introductions. The main purpose of the introductory paragraph is to grab the reader’s attention and present the idea and theme of your writing. Don’t make the first paragraph too long: between one and three sentences are enough to compose a regular introduction. Try to provide readers with a general portrait of yourself, so they will know more about the main “hero.” Mention your age, significant personal qualities, and principles of worldview. You can also add some details about your appearance in order to make your story more vivid.
Create an outline or a graphic organizer of the major topics and ideas you want to cover. For example, you might make a time-order chart -- a chart with event blocks to organize events chronologically. Or, you might draw a cluster web -- a diagram with connected circles -- to divide your autobiography into sections, such as one for relevant background information, one for life-changing events, one for special memories and one for goals and dreams. Focus on reasons why specific events, situations and circumstances were important to you and how they made you feel.