I find that one of the greatest impediments to getting things done is overconfidence. After a string of successes, at some point I start to think that everything will turn out great, no matter what, and that’s when I start to get careless.
At which point, inevitably, something goes wrong. And then I am reminded that the ability to maintain a little humility is one of the most useful tools in your toolbox.
Yes, I know it sounds ironic, but it’s true. There’s nothing like a good setback to help you make good progress.