Leadership, not management. You have to inspire people to work hard, long and sometimes grueling hours to deliver. Which means you must also work those same hours and do what you say too. I have always lived by this rule, I will never ask a team member (employee) to do something I am not willing to do myself. Doesn't mean I would be the best person to do it on the team, but I'll jump in and do my best.

And understand that delivery is all that will matter in the end. Rough edges are expected, perfection is unattainable and shipping is most important. It is ok to demand a lot but pick everyone up along the way, dust them off and push them back into the game and get rid of bad hires quickly (you will have them). This will go a long way towards holding a team together.

You also should be highly competent and technical with ideally a reasonably broad background. People should respect your capabilities, not because you demand it but because you do the job. Remember you are never to good for anything that needs to be done, cause it all has to get done.