Fortune looks at the biggest mistakes of some rising stars. An example from Kiva President Premal Shah:
I got some great advice once: "The relationship trumps the issue." Like a lot of entrepreneurs, and especially social entrepreneurs, I get pretty fired up and attached to my own viewpoints. At times when I have disagreed with someone, when the stakes are high, I can take it personally and it's added distance between me and the person. Remembering that the relationship trumps the issue is key.