Know when to take a risk, have the power to make a decision even when you don't have too much time to think about it.

Have a vision, be a visionary, set your goals and don't stop until you've accomplish each one of them. You might fail but don't give up, just keep going.

Be passionate about what you do, let it show, people will definitely see it.

You need to be confident, you must always know what you're doing even if you don't. Being firm is going to help others that have no clue of what are they doing.

Be as much energized as possible. If you are having a bad time in your business, don't let it show, just keep it up and go on.

You should take a look at this site, it has amazing advices for startup entrepreneurs.

Hope it helps