What’s the difference between biography and autobiography?

Lots of people are unsure about the difference between biographies and autobiographies. Often, that’s because they’re interested in writing their own story – or getting someone to help them write it – and they’re not quite sure what kind of book it’s supposed to be.

Should they write a biography or an autobiography? Can a life story written by someone else be called an autobiography? Do they need to write in first or third person? Are they important enough to write an autobiography?

Let’s open up the book on biography vs autobiography and find out…