I just got my GED and am almost 19 and trying to figure out what to do with my life.?

Im trying to figure out what to do with my life now that i have gotten my GED. I was thinking Real Estate or something along those lines but am still unsure. i cant keep working in fast food all my life .. i tryed to go to a school for game design but didnt like it after the 1st quarter and owe the scholl 2000$ in student loads for it . so trying to find out how to choose what im going to be doing all my life. i want to make something of myself.