Entrepreneurs need advisors. In the world of accelerator programs, we call them mentors.
You don’t know everything and you need critical feedback. Find people who are good at things you are not, like finance or sales; whatever it is.
Find people who will tell you the truth; people who will help you confront the brutal facts.
Find people who know other people. You may need an engineer or programmer or venture capitalist.
Meet with them regularly and share your progress. Listen carefully. Buy their lunch.