Sanguine

Sanguine, as defined by the AHD, is of the color of blood, having a red or ruddy complexion, or having the personality thought to be connected to this complexion: passionate, or cheerful, confident, and optimistic.

One might say that one is feeling sanguine about one's chances at the races. One might also say that a popular, extroverted person who enjoys and excels at social interaction is sanguine.

It comes from Latin: sanguineus (from sanguis, sanguin - blood), through Old French into Middle English. Compare this to the anglo-saxon term hot blooded, meaning easily excited or angered (AHD again).

I like the word sanguine because it ties an emotional state or psychological trait to the visceral and physical existence of the body, circumventing the Cartesian division between the physical and nonphysical that dictates much of our cultural understanding of reality. Furthermore, the word sanguine itself sounds good to me as well as having a good mouth-feel when being said. Try it. Sanguine.