Fascination with my heritage taken to extremes?

25% Japanese as a result of a mother born of Japanese-German descent in Yokohama, Japan and a father of Scottish-German-English-(and some others) descent, born in Jonesboro, Louisiana. An interest in Buddhism, as a religion yes, but more as a way of connecting with the world around me, led me to purchase a few books on the topic. Signed up for a Japanese class to learn to speak and write the language. And now, my Twitter updates are in Japanese each Wednesday. All of this in a matter of a few months. I believe in healthy exploration of "where you come from" but now taking a step back, I can't help but wonder what has driven my excessive immersion in Japanese culture. I relax a little when I decide that I have no real reason for concern until I quit my job, pack up, and move to Japan.