I’ve been reading an article called “The Negative Side of Positive Psychology,” by Carol Tavris, social psychologist. It’s just what I needed! Justification and positive feedback for my grumpiness:
“Optimists are more likely to keep gambling even when they keep losing money …”
“… (optimists are) more vulnerable to depression when the rosy, hoped for outcome does not occur.”
“… being in a down, melancholy mood can improve memory, reduce errors in judgement, boost motivation, increase the politeness of one’s requests to others, reduce selfishness in favor of fair play …”
You can read more, including her sources for this information, in the recent issue of Skeptic magazine. Volume 19, #3. Or not. What do I care?