Starting and growing a successful business can be a daunting task, but it helps to have advice from those who have been there and done it. Here are ten successful entrepreneurs who share their best advice for starting and growing a business.

1. Elon Musk, CEO of SpaceX and Tesla

"Focus on creating a product or service that people really need and want. If you can solve a problem or fill a need in a unique way, you will be successful."

2. Sara Blakely, founder of Spanx

"Don't be afraid to fail. Failure is a natural part of the entrepreneurial journey. Learn from your mistakes and keep moving forward."

3. Richard Branson, founder of Virgin Group

"Take calculated risks. Don't be afraid to try new things or enter new markets. But always do your research and plan for the worst-case scenario."

4. Mark Zuckerberg, CEO of Facebook

"Stay true to your vision and mission. Don't let outside influences steer you off course. Stay focused on what you set out to accomplish."

5. Arianna Huffington, founder of The Huffington Post

"Take care of yourself. Entrepreneurship can be all-consuming, but it's important to prioritize your own well-being. Make time for rest, exercise, and other activities that bring you joy."

6. Jack Ma, founder of Alibaba

"Believe in yourself and your idea. There will be many people who doubt you or try to discourage you, but if you believe in yourself and your vision, you can achieve great things."

7. Tony Hsieh, former CEO of Zappos

"Focus on building a strong company culture. A strong culture will attract and retain top talent and help your business thrive."

8. Sophia Amoruso, founder of Nasty Gal and Girlboss

"Be adaptable. The business landscape is always changing, and it's important to be able to pivot and adapt to new challenges and opportunities."

9. Tim Ferriss, author and investor

"Focus on building systems and processes. This will help you scale your business and avoid burnout."

10. Bill Gates, co-founder of Microsoft

"Never stop learning. The world is constantly changing, and it's important to stay up-to-date with the latest trends and technologies."

In conclusion, there is no one-size-fits-all approach to starting and growing a successful business. However, the advice from these ten successful entrepreneurs can provide valuable insights and inspiration for those embarking on their own entrepreneurial journeys. Whether it's focusing on solving a problem, taking calculated risks, building a strong culture, or staying adaptable, there are many paths to success. Ultimately, it's up to each individual entrepreneur to find the approach that works best for them and their business.