To pile on the subject of being open to change a bit, my entire life before I was 20 I wanted to be an architect. I pursued that goal relentlessly, to the point that I had two (AA in Architectural Drafting and CAD) degrees along with my diploma when I graduated from Highschool, and was hired at an engineering firm immediately to run their drafting department. 6 months later, I quit. I found that I had no interest in the reality of the job.
So, what is one to do when they have literally spent their entire life (what little of it there was at that point) wanting to do something, and then learning that it was a terrible fit for my natural desire/skillset? Well, I spent more time than I would like to admit bouncing, trying to figure out that exact question.
Through a combination of networking, deliberation, and just dumb luck, I found myself with the ability to become part of a start up. I took that risk, I was open to a new opportunity, and spent 5 years helping to build that company into one of, if not the, premier energy brokerage firms in Ohio. It was a lot of work, a lot of long hours, but I loved it. When the opportunity came for me to take the next step, to "write my own check", so to speak, I jumped at it, even though it took me to Houston. Now, at 37 and much wiser, I find myself unknowingly doing exactly as Bob suggested. Sales, grinding, learning how this business actually works. I won't be here forever, and my next step will most likely be back to the broker side, working for myself or as a partner in a firm.
Tl:dr ; If I had learned what I know now when I was your age, I'd be a millionaire. The most important things I can give you are, "Trust in yourself, your ability", "don't fear risk or chaos, that is where opportunity lives", "Be willing to work harder than anyone else". You got this, man.