Writing Prompt- Your Backstory

So for tonight's writing prompt, let's pretend that our lives are exciting and worthy enough to be put into a book. Anyways, if you were going to be put into a book, what would your back story be? If you could change anything about your past, what would it be?

After that, try creating back stories (a past) for multiple people.

For example:

1. A gas station clerk who recently comes into work more happy then usual. Why is he so happy?
2. A teacher who suddenly disappears from the school without reason. Why did he disappear? What could have happened in the past that made it so?
3. A girl who was adopted and then ended up disappearing. Why did she disappear, what happened to her family, and where did she go?

Sincerely,

Sareh