I think introspection can sometimes turn into rumination: obsessively remembering and reliving past mistakes. It is the latter that is harmful to people, but particularly founders.

This is especially true if you believe your mistakes are due to an internal flaw, because then you can't even learn from them. If you believe you are too damaged to be a good leader, then you will never lead.

I confess that I'm pretty good at letting go of my own mistakes. I can somehow learn from them without blaming myself for making them. That means I'm able to make a lot of mistakes without taking emotional damage. And that lets me try new things without fear.

Does that mean I'm less introspective than the average person? I don't think so, but I don't know.