Do you need to? It's okay to be passionate about things that aren't profitable.<p>But if you're looking to build a career around your passion, I'd recommend introducing yourself to people who work in that industry. This will help you learn more about the industry, and possibly identify pain-points in that industry which you could seek to address with a business.
There's no saying you can.<p>For every American Idol stars look how many people show up and never make it on the show.<p>Passion + Ability + Luck ~ Success<p>Also, this is an interesting talk about what it takes to start a movement.<p><a href="https://www.ted.com/talks/derek_sivers_how_to_start_a_movement" rel="nofollow">https://www.ted.com/talks/derek_sivers_how_to_start_a_moveme...</a>