How we view the world helps provide insight into how we go about our daily lives - choices we make (zucchini noodles, gluten-free or whole-wheat?), how we handle situations, etc. When making changes to nutrition and lifestyle, I have found it helpful and fun to have a better understanding of what makes me tick. It might also have something to do with the fact that my first degree is in Behavioral Sciences :) Here are links to a few free personality quizzes that I think are worth making some time to take.
Gretchen Rubin's Four Tendencies Quiz - find out if you’re an Upholder, a Questioner, an Obliger, or a Rebel. (Hint: if you automatically are saying "No way!" it's a good guess that you're a Rebel!) I am an Upholder on this quiz.
16Personalities - an abbreviated version of the Myers-Briggs Test. There are many books and versions of the test available on this subject, but this is a quick one to get you started. I score as an ISFJ and according to one site, Barbara Bush and Mother Teresa (now Saint) were both ISFJs.
Disc Test - This short test will provide insight on how you "view, interpret and interact" with the world and how the world views you through your "body language, facial expressions and tone." DISC stands for Dominant, Inspiring, Supportive and Cautious behavioral types. I am a C on this test.