Starting a company is not easy. There are times of enormous stress. Times when you wonder if it is really worth doing. Times when you are just ready to quit and walk away. But walking away will cost your people their jobs. Walking away will cost your investors their funds. Walking away will cost you your reputation. So you keep going. And you keep losing sleep.
It is hard to understand the stress of owning a business. Yes, you may have the next great idea. But reading books on leadership and business organization will never prepare you for having to fire people because of a bad decision. Or bad timing. There is no secret formula for success. Sometimes, things just do not go as planned. Life happens.
Seek out a mentor. Find someone who started a business and succeeded. Lean on their advice. Because sometimes you will need it.