Defining Ourselves

Today was not a fine day.  Generally I feel fairly confident about who I am, I try not to let the circumstances of my life define who I am or how I feel about myself.  But today was another matter entirely.  I hit a squirrel, with the car.  It was very unpleasant for me (and I'm sure for the squirrel as well).  But now all I can think is, "I am a squirrel killer".  I'll try to get past this new, unwanted definition of myself.