A just and reasonable modesty does not only recommend eloquence, but sets off every great talent which a man can be possessed of.
Start with good people, lay out the rules, communicate with your employees, motivate them and reward them. If you do all those things effectively, you can't miss.
There's a feeling of immortality you have in youth. You just don't see the dangers around you, or, if you do, maybe you're even excited by them.