Stoicism

Today, when I read about the article " Is the glass half empty or half full?" in Mind your body, I, for the first time, read about Stoicism.

It is a philosophy founded upon the teachings of Zeno of Citium.

Many interesting thoughts of philosophy:

"If you are distressed by any external thing, it is not this thing which disturbs you, but your own judgment about it. And it is in your power to wipe out that judgment now."

"First, decide who you would be. Then, do what you must do."

The reference which I got at the moment is this: http://en.wikipedia.org/wiki/Stoicism.