Honestly, you may not figure it out until it's too late, or you may figure it out today. I grew really interested in the workings of business, loved money flow, thought about econ, ended up not being that interested, looked into finance and thought it was dope. But now I'm stuck between accounting and finance after taking an accounting class, so I'm just going to take another accounting class, see if I am still interested, and go from there. You kind of have to go to school with a good idea of what you want to do, otherwise don't go to college and find a bit of a path first.