Any day that there's a blue sky above me I'm going to be feeling pretty good. Throw in a convertible, some tasty lunch and an increasingly interesting book into the mix and the result is a marvelous mood melange; excited anticipation of evening activities, a content feeling all over from lunch, etc.

It makes my multi-tasking abilities about 50% more efficient, as well, so that instead of juggling five things at once, I can keep ten balls up in the air.