It does not matter what do you work. What is really matter are you special in doing your work? They asked one millionaire how many hours you are working every day, his answer was none. The reason he answered this question this way, he consider himself enjoying what he is doing, it is not a work for him, it is a pleasure. The key point here, you need to find something that you really enjoy doing it and make it your profession. I was convinced previously that we should love what we work to work what we love. But i found the most reasonable statement is we should work in what we love to enjoy working it.