The curiosity about the myth related to goddess Athena of Edens was what made me go through more about myths and here are some interesting pieces of information that I found. So, a myth is basically a story which has 4 or any of the 4 characteristics. The first thing about a myth is that it is any story about gods or supernatural powers who has considerable powers than humans. Second thing is that myths are stories that happened in a very distant past. Third, myths explain the origin of a particular world or characters. Finally, myths are stories that are often regarded as true and sacred.
Stories that come written in books, other references etc are the sources that provide information about myths. But the fact is that most myths were not written but remembered and passed along by storytellers. There are scholars who are specialised in this field called mythologist who can explain things better. The books (publications) about myths aims at educating people but sometimes they convey a false impression that there is only one version of any particular myth.