Where is my mind?

"I'm sorry... you met me at a very strange time in my life."

As Edward Norton holds Helena Bonham Carter's hand in the midst of crashing glass, imploding buildings and clouds of dust, as the last frame of Fightclub slides into the credits and 'Where is my mind' plays in the background, as I get gooseflesh every single time I see that portion of the movie. Where is my mind?!