Don't regret your mistakes. You'll always make mistakes. The better you are, the less mistakes you make. The only way to get better is to thoroughly analyze your mistakes.
James AltucherWriting a book makes you an expert in the field. At the very least, when you hand someone a book you wrote, it's more impressive than handing a business card.
James AltucherEvery day you reinvent yourself. You’re always in motion. But you decide every day: forward or backward.
James Altucher