Enneagram Obsession

I checked out this book a week ago as a total self-help maneuver to understand myself a little better and to figure out what to work on to grow personally and spiritually. It's called "Wisdom of the Enneagram: The Complete Guide to Psychological and Spiritual Growth for the Nine Personality Types". The idea is that there are 9 general types of people. So I've taken several tests to figure it out. I was getting totally frustrated by these tests, unsure how to respond to such questions like:
I've been
a. romantic and imaginative.
b. pragmatic and down to earth.
What if I am both at different times? How do I just pick one? Or here's another problematic question:
Generally, it's been
a. easy to "get a rise" out of me.
b. difficult to "get a rise" out of me.
What if sometimes it's easy, but sometimes it's difficult? What if I have a split personality?! Oh my God, I think I'm schizophrenic! Or manic depressive!

Trying to figure out my personality type in order that I might improve myself and find more peace in my life was causing me a LOT of stress! But that did not make me put down the book. Oh, no. That would have been the smart thing to do. Instead, I stayed up late, worked through the frustrating times just to find out which one of the nine boxes I would fit into. Darn it, I knew it would be one of them. I think I'm probably a mix, with one dominant kind. Here they are for you, in abbreviated expanations:

1 THE REFORMER
The Rational, Idealistic Type: Principled, Purposeful, Self-Controlled, and Perfectionistic
2 THE HELPER
The Caring, Interpersonal Type: Demonstrative, Generous, People-Pleasing, and Possessive
3 THE ACHIEVER
The Success-Oriented, Pragmatic Type: Adaptive, Excelling, Driven, and Image-Conscious
4 THE INDIVIDUALIST
The Sensitive, Withdrawn Type: Expressive, Dramatic, Self-Absorbed, and Temperamental
5 THE INVESTIGATOR
The Intense, Cerebral Type: Perceptive, Innovative, Secretive, and Isolated
6 THE LOYALIST
The Committed, Security-Oriented Type: Engaging, Responsible, Anxious, and Suspicious
7 THE ENTHUSIAST
The Busy, Fun-Loving Type: Spontaneous, Versatile, Distractible, and Scattered
8 THE CHALLENGER
The Powerful, Dominating Type: Self-Confident, Decisive, Willful, and Confrontational
9 THE PEACEMAKER
The Easygoing, Self-Effacing Type: Receptive, Reassuring, Agreeable, and Complacent

For more info, go to:
http://www.enneagraminstitute.com

I think I'm a 4 and a 1. I am loving this thing, though, because the more I read the more I am agreeing with it. I am turning over a whole new leaf. Watch out world, the new me is coming! (As a kid I always loved corny lines like that).