Use people...

In work its important to use people. They know things you don't know and have experiences you don't have. Many people think that if they only applied themselves they could do that other persons job. It isn't true.

Understand the role you play on the team (Are you project manager, teamlead, technical architect, customer, business analyst or developer?). Play your role - stay with in your confines. Give suggestions if you have them, but let the other person work how they work, support their decisions, don't undermine them. Supporting people make them stronger and makes the team you work on better.

Listen and learn from people in a different role.