You have heard the old saying that a pessimist sees the glass as half empty while the optimist sees the glass as half full.  
That is not a smart comparison.

Defined that way... optimism means giving your life experience a positive emotional spin... while pessimism entails giving it a correspondingly negative spin.

If the only difference between optimism... and pessimism is your emotional perception... it is not about... "thinking"... it is about..."feelings." 

Any smart aware men... and women... GETS THAT!

It does not really matter which viewpoint you have... 

"It's half full... and I'm happy about that." 

It is not much better than... 

"It's half empty... and I'm bummed about that." 

They are both a passive acceptance of the situation.

As I see it... the true difference between being an optimist... and a pessimist is not emotional spin... it is the thinking that you can... should... and will take action to change things.

A true optimist sees things as they are... visualizes the opportunities... and how they might become better... and then takes action to make them so... they make the opportunity HAPPEN!

A true pessimist sees things negatively from the start... even when opportunities present themself... expects things to get worse... and can barely summon the energy to prevent disaster.

In other words... a pessimist stares at a half-empty glass... and mutters...

"Why me?"

While an optimist sees the same glass and says... 

"I am going to fill the glass... add some ice... mint... lemon and drink that sucker... and then have more... and more... and a lot more... and start a business selling... iced minted lemon water."

And if you do that... I want royalties... after all I am an optimistic type... that you will be very successful!

May You Enjoy A Prosperous And Productive Day!

Yours Sincerely
Ange Fonce