At some point we have to realise the people who are fitter than us are simply just doing more exercise.

Successful people are similar. They work harder.  

Don't ever look at a successful person and say - "Oh, I wish I was that successful". 

Ask yourself "What could I do more of"? - "What are they doing that I'm not"? - "What strengths of mine are not being focused on above all of my current challenges"?

Want to succeed? Work. Invest. Educate. Give back. Practice. Trial. Do.