Perhaps it's worth looking at success in the "real world". Jim Collins in his work on the role great leaders play in transforming good companies to great companies writes "... leaders blend the paradoxical combination of deep personal humility with intense professional will ... How do leaders manifest humility? They routinely credit others, external factors and good luck for their companies' success. But when results are poor, they blame themselves. They also act quitely, calmly and determinedly ... they are stoic in their resolve to do whatever it takes to produce great results."
Hopefully, we behave in this way and teach our sons likewise.