it is widely believed that some people are born lucky and successful, because they possess high intelligence. but this is not true. high intelligence is not equal to success. success lies in not only the intelligence factors but also the non-intelligence factors.
non-intelligence factors are at least as important as intelligence factors, if not more than the latter. success is built upon tremendous amount of study, practice and devotion. in addition, having a definite goal and knowing what to do net become more important. in fact, researchers have evidence that an intrinsic passion for one's work is a key factor for success.
according to my own eperience, during our college years, having a good study habit is also important. higber marks can't be gained by putting in more hours. efficiency in study can help us learn more.
therefore, i think success is brought about both by innate intelligence factors and by non-intelligence factors.