I'm a believer of "passion", but at the same time, I do think that "passion" should be balanced. I disagree with the thinking that if you're into arts, then you don't need to study maths. Or if you've managed to run a business even before you graduate, then there's no point of finishing school or university. Life should be balanced. Like day and night. Like fiction and fantasy. Practice goes well with theories. Sometimes, we abuse the idea of "passion" that we neglect the fact that in life, it's not always about you. And even when it's about you, you need to be complete. Don't use "passion" as an excuse to miss out on other things life has to offer. Don't just live in your own passion-bubble and not touch other worlds. Be out there and stay current.