It's not about following your passion or not following your passion. It's about not lying to yourself about what you expect to get out of it. If you anticipate a new obsession will be monetized, it will not work out for you, because the lack of money will disappoint you and you will quit. But you actually have a VERY GOOD CHANCE of monetizing obsessions that you don't care if they make money or not. Because you will show up through the highs and the lows.