It would seem the comic book thing is what triggered you. (obviously). We can get triggered so easy. I would focus on that and how you might process the whole thing or somehow get your enthusiasm back for such a great endeavor.

I can't tell you how many times I have had plumbing inventions in my head, tools and what not, only to find years later the exact same product being sold. Of course I never pursued it so I couldn't be to dissapointed.