It’s much easier when you’re into it
Technology makes it really easy to start projects. We’re often tempted to jump into projects that seem like good ventures. In reality, it’s pretty hard to work everyday on stuff you do not like. I’m not talking about a regular job where you get paid well, learn a lot and have a good team. These things can compensate for working in industries you like a bit less. I’m talking about projects you’ll end up spending your Saturday nights on.
I think a good exercise to test your idea first:
Write one short article (250 words) a day about that topic, during 2 weeks.
Then go talk to 5-10 persons that are really into that stuff. See if you get along with them.
And if you have some pocket change, buy 5-10 products related to that venture.
Have fun!