It hasn't change my life, but it changed my views on it.
I am trying harder now to understand why Objectivism is not appreciated.
So many misconceptions about egoism, and so inflexible positions on religion; I never thought 9/11 possible, until I read "Philosophy, who needs it?", and noticed how Ms. Rand predicted the lack of reason (and reasoning) pushes humans to collectivism, and to sacrifices of others.