In this definition, success is not measured by how much we get, but by how much we give. Successful people are those who give the most value to others. They sincerely help other people advance, even to the point that other people become richer, more famous, or more popular than them.
The phrase “even to become more successful than them” is important. Most people are willing to help, but may be reluctant when they realize that their help may make other people surpass them in wealth or popularity. This is especially true if the other people are younger or newer than them. This kind of attitude makes them willing to give only to a certain point. The real successful people, on the other hand, are always willing to give. They are happy to contribute to others.
Often, this kind of selflessness pays off handsomely. Other people who receive their help usually will return the favor whenever possible. Since successful people give a lot, they in turn will also get a lot. But this is not their motivation. Even if they don’t get, successful people will keep giving.
Of course, it is not easy to have this kind of attitude. Many people (me, at least) tend to be selfish. They think more about what they could get than what they could give.
Remembering this definition is a start to help us put it into practice and eventually become the real successful people.