I noticed one interesting thing in my opinion.
I noticed that the human condition (optimist or not, can be determined by ...
On his lips!)
Almost 90-95% of people who travel in non-rush hour public transport are shaped like lips:

')
Still have

Successful people who ride cool cars, or just optimists, live as they want, most often, again according to my observations, I have the shape of lips inverse:


That is, the lips themselves go either up or down.
Today, when you go to work / school / on business or go home, pay attention to this.
Thank.