Write a rough first draft. You may feel pressure to write and rewrite every sentence you put down. But part of writing a memoir is writing an honest account of a pivotal event, in your own words and with your own style. Avoid putting on a “writer” voice. Instead, don’t be afraid to write like you speak or talk. Include slang and any regional vernacular. Make your story sound like it is coming directly from you.[12]

Create an overarching plot. Now that you know what content you want to include in your autobiography, think about how you want to structure your book. Like any great book, your autobiography needs a great plot. Work with the material you have to craft an interesting story that builds toward a climax and ultimately resolves. Create a narrative arc[3] by organizing and filling out your written memories and anecdotes so that they flow together logically.

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.[2]

Once you have your initial list, elaborate on each key event in your outline. If you're using the autobiograa, fill in the blanks, and then write anything you remember about that point, a little or a lot, whatever springs to mind. Later, you might choose a single event that best illustrates each point in the outline and describe the event, using your theme statement to guide your description.
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.
Discuss any special circumstances such as obstacles or challenges you've faced, and how you've dealt with them, recommends Xavier University. This is especially important if your autobiography is for a college or scholarship application. For example, you might write about struggles you faced growing up in a multiracial family or how you've learned to live life to the fullest, despite being a diabetic. Your autobiography should be an honest representation of who you are, so avoid embellishments and exaggerations, suggests author and public speaker David Ford. The goal is to help readers understand how events, hardships and experiences have molded you into the person you are today.