The A student work for the C student as they have a different mindset. The A student has never failed and so doesn't like to take risk whereas the C student has failed many times and so can take risk if necessary. This is not always the case. This is more about mindset then grades. The takeaway is to start a business, invest, write blogs, etc. Have more then one source of income and be open to change and walk into any doors that open.
