[lisper]

> there seems to be a common theme around not believing in the idea/product/people too deeply, thus leading to faulty or mis-step execution. would it be right to say that?

Not sure whether you're asking whether that sentiment exists or if it's correct. But either way, there's no easy answer to that. If you don't believe that's not helpful, but on the other hand, if your beliefs don't align with reality that's not helpful either. It's possible to succeed without strong convictions, and it's possible to succeed with convictions that don't align with reality, but if you have to choose one or the other, believing in yourself is a better than believing in reality if your goal is material success. (Look at Donald Trump.)