Congratulations for sticking through and finishing! In the future, however, I would recommend that you use something more like agile or Steve Blank principles.

Congratulations for sticking through and finishing! In the future, however, I would recommend that you use something more like agile or Steve Blank principles. That way you don't end up half way through something, with a big amount of time sunk into it, and have to finish a product you're not excited about. Those processes are good for allowing you to pause, research what you're doing (and measure how people interact with it), and pivot. That said, here's the silver lining: you successfully designed and built a product in a very difficult market. That's no small feat. Be proud of what you've done, even if you don't think it's up to your personal standards.