One of the biggest things I learned was that it's OK to be nervous and admit that you're having a hard time.
Everything the human being heard from the beginning, saw with its eyes, looked upon and touched with its hands was a living word; for God was the word.
Learn as many mistakes and what not to do while your business or product is small. Don't be in such a hurry to grow your brand. Make sure that you and the market can sustain any bumps that may occur down the road.