The original post seems, at least to me in my reading, to be asking whether we believe there is a difference in “success” between those who made education a priority (and worked hard, as the OP did) and those who didn’t.
It is impossible to answer this because the term “success” has a different definition for each of us. Challenges happen for all of us, and it really is about how we handle them.
I believe that learning in school is best done “for the sake of learning.” If you follow genuine interests, the work is more enjoyable. However, practically speaking, many do go to school for a career and work hard for grades in classes they don’t have an interest in, for the sake of future prospects.
Whether or not a person is eventually successful or not, I always hope education can be less of a grind for grades and job prospects, and more of an exploration and expansion, that benefits you when you are employed, or unemployed