Written for EO by Reuben Yonatan, founder of GetVoIP.

Even the most successful people in the world today have struggled and made mistakes. The difference between those who make it and those who don’t lies in how they overcome adversity.

Did you know Bill Gates’—yes, one of the founding fathers of modern computing—first business and tech venture was a failure? Can you imagine what the world would be like today if he gave up? What about Jack Ma, who struggled in school? He went on to co-found one of the largest global commerce, retail, Internet, AI, and technology conglomerates.

Learning from failure is the key to success. Ask successful people what pushed them to be better, and it’s likely they will point to a low point in their entrepreneurial journey. Instead of giving up, they were inspired to try harder.

Bill Gates and Jack Ma aren’t the only billionaires to run into failure, either. This infographic, by GetVoIP, features 20 distinguished billionaires who struggled before they thrived and found their place in the world. Let’s take a closer look at who they are what they overcame.