Chelsea boss Andre Villas-Boas has branded himself a "very negative person".

Despite having won so much, so young, the Portuguese has revealed he lacks self-belief and is forever fretting about the prospect of defeat.

"I'm a very negative person," he said.

"It's just a way of being. Everyone reacts differently to competition. That's the way I react.

"Before any competition, everyone is stressed in a different way.

"You have to think about all the perspectives: winning, losing or drawing. I think through them and the effect they'll have.

"'Normal' people think about winning.

"I don't go pessimistic, but I go through every one. I like to be ready. That's the way I am."