Microsoft cofounder Bill Gates believes it's about making an impact on society.

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Gates is the wealthiest person in the world, with a net worth of $86 billion, But to him, success is about relationships and leaving behind a legacy.In a Reddit AMA, Gates took a tip from Warren Buffett when asked about his definition of success:"Warren Buffett has always said the measure [of success] is whether the people close to you are happy and love you."He added: "It is also nice to feel like you made a difference — inventing something or raising kids or helping people in need."