It’s good to have knowledge and conviction in what you do. It helps you to act with confidence and be assertive, which is necessary in success. But be wary of any inclination to think you know it all. This closes the mind.
The old saying that “a mind is like a parachute, it only works when its open” has much truth to it. We live in a rapidly advancing age. Regardless of what you know, it is a fraction of what there is to know. My perspective is if we have not reached the pinnacle of success in whatever we are working towards, how can we possibly consider closing our mind to new ideas or potential for improvement?
Even Benjamin Franklin, who was obviously a pretty intelligent and successful guy, was willing to consider new information.
“Having lived long, I have experienced many instances of being obliged by better information, or fuller consideration, to change opinions even on important subjects which I once thought right but found otherwise.”- Benjamin Franklin
Never let ego get in the way of learning.