We've found good result hiring candidates who've experienced some form of ego-death. It's a difficult signal to separate from the noise of the talent pipeline, but until people start filling their resumes with meditation buzzwords, it will suffice.
How do you select for this? I am significantly less cocky than in my youth, simply because I have accumulated a long list of personal failures (ie teaching moments). Failings which I would not want to discuss with a potential employer.