Be good at something. It makes you valuable. Have something to bring to the table, because that will make you more welcome.
Randy PauschBe willing to apologize. Proper apologies have three parts: 1) What I did was wrong. 2) I'm sorry that I hurt you. 3) How do I make it better? It's the third part that people tend to forget. Apologize when you screw up and focus on other people, not on yourself.
Randy Pausch