Perhaps the best insight other than your own experiences is to attend an "operators forum". GAC offers 5-7 of these a year around the world. Each time I attend, I learn something. However, one constant is that there are always 1-2-3 guys there who are wound up beyond belief. When it comes time for the Q/A, they explode. ... it happens every time! So just make sure you are learning about systemic problems, not individual biases.
FR