@TooOld4School Engineering isn’t an option since it would take another year of full tuition to do the requirements.
My Michigan Econ major husband would love to correct your perception of failure. 
You’ve gotten good advice and perspective here. Your future is only ruined if you believe it is, and you have the ability to control what you believe. Stop spouting nonsense and get back to work. You have plenty of time and ability to go into business or medicine or whatever else you decide to pursue; there are many routes to those fields. Getting denied from Ross is hardly going to determine where you end up or how successful you are.