In order to succeed with a business you've got to have passion for the certain field you are dealing with, for example- I believe that I can have success with cigar shop because I just love cigars, and eager to learn more. Unless you have it, don't get into it. You'll have to figure out by yourself what your dreams and desires are, what are you good at etc. With 50,000$ in hand you can't afford hiring professionals to assist you by consulting about fields and markets you are not familiar with, you are on your own.