Cool thread! Another INFP (sometimes J) here. Enneagram type 4. I identify with both, but I found Enneagram told me far more about myself, stuff I'd never considered. Some of it offered perspective on my addictive personality. Type 4's over-identify with their emotions; feeling sh*tty can become a full-blown identity crisis and is regarded as something that needs to be resolved quickly. "Get me to the liquor store ASAP..."