This article is published in collaboration with Business Insider.

Regardless of how we define it, success can feel like a fleeting and often elusive target. It takes confidence, passion, and drive to accomplish your goals and to recognize success when you’ve achieved it.

Here’s how 20 influential executives and entrepreneurs describe the key to their success.

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Publication does not imply endorsement of views by the World Economic Forum.

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Author: Mike Nudelman is Business Insider’s Graphics Editor. Richard Feloni covers management strategy and entrepreneurship for Business Insider.

Image: Jack Ma, Founder and Executive Chairman of Alibaba Group addresses the Economic Club of New York at the Waldorf Astoria Hotel. REUTERS/Mike Segar.