I was always an honours student and ten years later I'm still in school LOL. I think I was good at school because I actually do really love learning, which would explain why I'm still doing it! Eventually all of my education and grades will pay off with a great job that I love.
On the other hand, my husband was an okay student, Bs and Cs, and never went to college or university. But now he makes an amazing salary and has a pretty high profile job.
I think there are some areas which require a strong academic background, and others where it's not so important. Everyone has different strengths!