This short clip was shared with me by my Brother. (Thank you!)
I believe Mr. Jobs is squarely on point.
“People say you have to have a lot of passion for what you’re doing and it’s totally true. And the reason is because it’s so hard that if you don’t, any rational person would give up. It’s really hard. And you have to do it over a sustained period of time. So if you don’t love it, if you’re not having fun doing it, you don’t really love it, you’re going to give up. And that’s what happens to most people, actually.”
– Steve Jobs, 1955-2011