how would you describe yourself?

I was asked again..this apparently so simple question..How would you describe yourself? ( and it was not for a job interview :))
What big deal..everybody can answer that by 2-3 words at least..
(I even learned about sb's blog in which she put all things she liked or disliked in a pile of short phrases.. it was sth like " I prefer my soup hot. I don't stand mice. I wake up early.etc)
I more often hesitate on answering.. 'Cause it s somehow related to specific moments I think of on the spot..
Your deeds characterize yourself,no?
For my part, on some ocasions I act quite differently depending on a number of factors, the most important being the persons close to me..Like there are 2 opposite fellows inside and they express each in turn.. And then, which one is real?
To make myself clearer, I could be extremely selfish, cold, exaggeratedly proud , even mean with those who awake this 'dark' side of my temper.. With some, on the contrary, I act generously, warmly, without the slightest touch of selfishness..
It's bonded to the persons whom I interact with, but not necessarily a straight relation - good acting people-good side of me and the reverse..Many times it was a cross link: nice people- bad me and bad people- good me..I guess my behavior was related to the feeling of threat..With not at all nice people who didn't awake my 'en garde' reaction, a state of discomfort or menace inside me, I was surprisingly good...So, once again..it arouse the belief..that there are not good or bad people, but comfortable or threatening situations..everybody reacts more or less the same towards these 2 feelings..what makes a difference is the trigger..the way we perceive it.
My last note is on envy..I heard somebody discussing about why are people envious.. it's not about the money, the job or the beautiful wife your neighbor has, but about your perception about his satisfaction with these accomplishments. What we envy is the way sb is feeling, not the trigger actually. It was an interesting explanation of envy and I agree completely. It also helps to turn this negative feeling of envy into something more useful once you are aware of its mechanism...
You could be glad someone is happy and have your share of well being..
I found a quote from Buddha these days..very nice indeed.
"Happiness never decreses by being shared". Take away message.