The less you can live on, the more chance your idea will succeed. This is true even after you’ve 'made it'. — Hugh Macleod. Topics referred to by the same term
Stamina is utterly important. And stamina is only possible if it's managed well. People think all they need to do is endure one crazy, intense, job-free creative burst and their dreams will come true. They are wrong, they are stupidly wrong.
Your idea doesn't have to be big. It just has to be yours alone. The more the idea is yours alone, the more freedom you have to do something really amazing. The more amazing, the more people will click with your idea. The more people click with your idea, the more it will change the world.
Publishers are just middlemen. That's all. If artists could remember that more often, they'd save themselves a lot of aggrevation.
Good ideas alter the power balance in relationships, that is why good ideas are always initially resisted. Good ideas come with a heavy burden. Which is why so few people have them. So few people can handle it.
Nobody can tell you if what you're doing is good, meaningful or worthwhile. The more compelling the path, the more lonely it is.