How to use influence to get things done

I enjoyed reading this article by Strategy+Business on how to use influence to get things done.
http://www.strategy-business.com/media/file/sb62_11104.pdf

Here are the five factors to use influence well:
1. Build up the courage to raise difficult problems
2. Leave your personal agenda at the door
3. Rise above the game, but don't ignore it
4. Engage the group using emotional intelligence
5. Be tenacious, because decisions do not guarantee actions