I totally disagree with this. I think there's probably a bell curve relating confidence in your own abilities to actual performance. At one end, you have peop

I totally disagree with this. I think there's probably a bell curve relating confidence in your own abilities to actual performance. At one end, you have people who think they just lucked out, and they'll have poor performance because they'll practice cargo-cult management: doing things just because that's what the management books say you should do. At the other end, you'll have people who are supremely confident in their own abilities, but their hubris will keep them from entertaining valid objections from other people. They'll be blinded by their sureness that the path they picked is the correct one. You want people who are confident enough to know what they don't know and able to ask other people for help in those areas. These people will be able to lead a team by letting the people in the team know that they're important in the decision-making process.