C. S. Lewis wrote: “The more we have [pride] ourselves, the more we dislike it in others…if you want to find out how proud you are the easiest way is to ask yourself, ‘How much do I dislike it when other people snub me, or refuse to take any notice of me, or shove their oar in, or patronize me, or show off?’”  He who can easily shrug off such things probably doesn’t have an overinflated  sense of self.

William Lyon Phelps wrote, "The final test of a gentleman is his respect for those who can be of no possible service to him."  Don’t go on about your own stuff.  Ask people for their input, even if you don’t particularly need it.  Give credit to others for their contributions.  

But beware: at a meeting of Moshe Dayan and Edward R. Murrow, Dayan repeatedly praised the newsman’s legendary broadcasts. Murrow humbly disclaimed the achievement. Finally, Dayan said, “Don’t be so modest. You’re not that good.”

From the happiness project.