"But ALWAYS trust your gut on NOT to do something. If your gut tells you to not work at a particular company (or to stop dating someone), trust it implicitly as your gut is much better at saving your life than it is at figuring up upside opportunities."

The problem with this is that we have no data on people who had a gut feeling that something was not right but were wrong about that gut feeling. People would tend to talk about times when "I should have listened to my gut about this" but rarely would tend to talk about when their gut was wrong and they were worried for nothing. (And I can think of several personal examples of this type of thing.).