Your alarm clock rings. You get up and go through your morning routine, and finally catch a glance in the mirror. Something...is not right. You look like you, but at the same time, you don't. What's going on? Next thing you know, everyone is calling you by a different name. Then you realize:
You're being called the name of the MC in your book!
How do you react? How many of you are getting genderbent? (okay, that's not relevant, but.) Also, think about this: You have prior knowledge of the timeline and chain of events.
Knowing what your MC will likely face, how do you react? Would you change the way some things would happen in order to keep yourself from facing their tragedies? What would you do if you woke up one morning as the main character of your story?