Running a company alone is much harder and more stressful than it seems, and it's especially unusual for a startup to succeed with just one person behind it. You are basically in charge of everything....... all the time! I'm not going to point out why people often fail here because I believe failure is a part of the journey. Many great business people once failed. The lessons they learned was what made them so successful in the end. But, I will say that running a company alone is the worst thing you can do.
So, here is the thought for today... don't go it alone. You're going to have to have help. Find someone willing to help you (usually for free)so you're not alone. This will not prevent failure, but it will give you a fighting chance to navigate your startup. You still might fail, but the other lessons are important ones and you shouldn't be distracted by running the entire business alone.