Many writers who attend workshops and critique groups are writing the stories of their lives. They want to share the wonderful things they have learned over the years so others can learn from their experience. My cyber friend, Terry Whalin, has an excellent article for you if this is your desire. Visit his blog,The Writing Life.
I also found a couple great books that will help you:
Writing & Selling Your Memoir: How to Craft Your Life Story So That Somebody Else Will Actually Want to Read It, and Writing Your Memoir.
Check out Cec Murphey's blog series on biography vs. memoir.
Have you thought of writing little snippets of your life journey? You could earn a little compensation by taking time to write personal experience articles for magazines and blog posts. By doing these two exercises, your writing will become tighter and better, and you'll build a platform for yourself.
Are you writing your story? What do you think about capturing snippets into personal experience articles?