Regardless of how we define it, success can feel like a fleeting and often elusive target.
It takes confidence, passion, and drive to reach a level of success and then do what's necessary to sustain it.
We've collected wisdom from 14 prominent CEOs and entrepreneurs who have seen drastic ups and downs throughout their careers.
Their advice is as appropriate for someone just starting out as for an industry veteran.
Steve Jobs, Apple cofounder and late CEO
Steve Wozniak, Apple co-founder
Jack Ma, Alibaba Group founder and chairman
Marissa Mayer, Yahoo CEO
Mark Cuban, serial entrepreneur and 'Shark Tank' investor
Barbara Corcoran, Corcoran Group co-founder and 'Shark Tank' investor
Warren Buffett, Berkshire Hathaway CEO
Jack Dorsey, Twitter co-founder and CEO/Square founder and CEO
Richard Branson, Virgin Group founder and chairman
Mark Zuckerberg, Facebook co-founder and CEO
Aaron Levie, Box cofounder and CEO
Lori Greiner, serial entrepreneur and 'Shark Tank' investor
Marc Andreessen, serial entrepreneur and Andreessen Horowitz partner
Michael Dell, founder and CEO of Dell Technologies