Optimism

I keep on hearing this word again and again. Can I call myself an optimist? Well not sure. I am optimistic of tomorrow.

I have always felt these two things :
Today is definitely better than yesterday.
Tomorrow will be better than today.

I believe in living today but never had a doubt that tomorrow is going to be bad. Well, I guess I am optimistic of future.

But something is wrong, do I procastinate my things to be done today b'coz tomorrow is always better? Gotta be careful.