As you already know there are hundreds of papers / books /methods to choose the right niche and product but one single sentence was always in my mind during the whole process:
An approximate answer to the right problem is worth a good deal more than an exact answer to an approximate problem.
John was a mathematician but I think his sentence summarizes perfectly one of the biggest challenges we all face when having to choose where to put our effort. It’s always easier to think about powerful and elegant solutions to things that may be a problem than finding a problem we know for sure it’s real even if we’re not sure how to solve it.
I just hope this time we have been able to properly follow John’s advice!