"...what the character DOES is far more important than what is DONE TO the character. Readers want to engage with a character who makes decisions and choices and takes action."
Mooderino, Waiting for a Story to Get Going, Moody Writing, Monday June 11, 2012
It occurs to me that a good check for this would be to go through your story and find all the places where your character is taking action vs. being acted upon. Which are there more of? I'll be keeping a sharper eye on my own story to make sure my characters are making decisions and taking action to solve their problems.