My advice is that the best attributes to have when going into a business career are; effort, self motivation and endurance. You do not to have straying A's, but you need to put in the effort to try. You also need to pick your self up when there are tough days at work or school. Also, surround yourself with positive friends and family that will help you through. Lastly, have endurance to try and try again when you fail. I've failed many times, but have built endurance to try again and again until I succeeded!