Intelligence doesn’t means success.
Knowledge is different from intellect.
Success is only one abstraction as there are other elements like emotions, ethics, creativity, work hard, preservarance.
Not perceiving people as threat if you are in same domain as there are so many variables of success and difference so even if they are above you or at par to you intellectually, they may be more or less successful than you are because of above other variables.
Study everything about the domain before getting into the domain.
Absolute mastery of the topic is very important.
It is great to have reference points of where you are heading professionally or life wise.