Everyone has life, academic and/or professional experience that they may share with others through the written word ie write and publish your own book.
Some people are afraid to publish for a number of reasons, but there's no, need to be afraid when you keep in mind that hundreds of thousands of people have gone through the process of writing, editing and publishing books.
You have more information at your fingertips than you've ever had before. There are a number of mentors, teachers, consultants, gurus, experts, etc. that may be available to help you publish.
Once you have the desire to publish and start in right where you are you'll find the help you need has always been there, simply waiting for you to say "I'm ready!"
For details on how you may begin publishing your own ebooks you'll want to visit eBook Publishing!