There's actually a commonly repeated lesson there (although I forget the popular source) -- You should have passion for the problem, not passion for your soluti

There's actually a commonly repeated lesson there (although I forget the popular source) -- You should have passion for the problem, not passion for your solution to it. If you're passionate about the problem, and it's a real one (it's unlikely you can be passionate about an imaginary one), there's no such thing as too much passion. If a solution you worked on for hundreds of hours isn't the right one to solve the problem you're passionate about, that passion will overcome your attachment to the solution and you'll be willing to pivot. Have passion for the problem, and even if other people have attempted to solve it, your passion will help you solve it better than them even.