Great things start from humble beginnings. Most of what you see around you started as nothing more than a simple idea and a crude prototype. It’ll take 5 to 10 years to turn it into an “overnight success”, with dozens of setbacks and course corrections along the way. So pick something you’re passionate about and get started.
I was deciding whether this venture was worth committing to another year of 70+ hour weeks. I need a higher level of certainty than investors do because my time is more valuable to me than their money is to them. Investors place bets in a portfolio of companies, but I only have one life.