I wasn't expecting any particular answer, so the one you gave is just fine. It's your answer and that the most important.
Learning my type meant for me that I'm a one step closer to understanding myself better. Many of the stories that I wrote are actually the product of my attempts to depict how the world inside my head looks like. Obviously I'm not satisfied with any of them, because something is always missing, but with every new thing that I find out about myself I'm a step closer. Knowing my type allowed me to understand that what I felt and thought about the world around me was not so strange after all, that maybe feeling out of place is a way of being in place, if you know what I mean.
As for the books I'm not really sure. One of the first books that I got was the Hobit, and for me that was just wonderful place and a beautiful story. I used to reread it so many times. A bit later on, I read Wuthering Heights, and it shaped me a bit when it comes to my love expectations. A bit more later on I read Divine comedy, and found out that someone else was thinking the same thing as me, that people should get what they deserve, and that the road to the love and understanding is hard and full of obstacles. The a bit more later on, I read Dostoyevsky and it shaped my sense of moral. I like Faulkner, Vulf, Murakami, Andric, Pushkin, also. For me it's not one book, it's many writers and many books that shaped and influenced me in many ways.
I didn't read East of Eden, though it is on my list.
What other books shaped who you are today?
Have you ever felt out of place?