Pessimism of the spirit; optimism of the will.
The sting of losing is bad.
I'm English, so I can be very 'half empty.'
The disappointment of losing is huge.
It's the worst feeling in the world - losing, and losing in a final on the big stage is even worse.
I'm rarely optimistic.
It hurts to lose an election.
I'm so optimistic, it's depressing.
As most who have engaged in competitive sports know, there's nothing to match the amplitude of emotion brought by losing.
Cynicism is intellectual treason.
Pessimist: One who, when he has the choice of two evils, chooses both.