Despite the egotistical tone of Haleys, the use of her personal story was effective. Like any good homiletic, a great tool to draw-in an audience to receive a message is the use of narrative. It compliments the theory so well. It notably shows the progression of her discoveries from a personal view point. I'm not sure she would have grabbed my attention without the use of narrative. Though I found the theory portion rather interesting, I noticed within myself waiting for her next autobiographical chapter to flesh out the dense and tedious theory. (Especially when she ranted on about artist books I am very unfamiliar with.) Therefore, I found her story to be not only relevant to her message but necessary.
Check out this short speech by RFK.
Take note of his personal story about his brother, John.