While IQ (Inteligence Quotient) represents to how smart you are, EQ (Emotional intelligence) represents to how well you manage your feeling in positive way.
Think smart or work smart, you need first control your emotions beside your IQ.
Without controlling your emotions, you will never be able to think; your brain is already in control, either your actions.
People say: "attitude determines our success"
Emotions determine the attitude.
So change our emotion is the first prior to do.
That's still a mathematics! ;)
Of course, there is a book called: Emotional Intelligence, that you can find.
And here, I found a nice presentation about that on slideshare.
