Theory: Choosing hobbies with powerful openings
There are certain hobbies that allow the gifted in that respective hobby to make a lot of money. An example of one of these hobbies is poker (basically anything that deals with “real money”, such as stock trading). For poker player that reaches the top through hard work, the reward is a lot of money. The same goes for singers, who are discovered by someone/a label that can sign them and market them.
Therefore, you should always be looking to find hobbies with high potential. For example, it isn’t very often that you hear bboys (that is, breakdancers) and how they make millions. They just don’t have the capacity to make a ton of money, unless they are marketing geniuses or something. However, if they were marketing geniuses, then they could make much more doing just that.
Likewise, there aren’t a lot of professional skaterboarders who become millionaires from their trade. To do so, you’d have to be the best of the best, the cream of the crop, and an extremely attractive figure in public like Tony Hawk. The same goes for boxers. You don’t want to have a hobby that can only make you a lot of money if you are the best of the best — it takes either enormous skill and hard work or a prodigical gift that you were born with.
I believe the most commonly accepted thought is that people should do what makes them happy. I say find something that makes you happy with the potential to make you a lot of money. 