Negotiation is like a game of chicken. Except, instead of a chicken, you're dealing with a toddler on a sugar high.
Here's a tip: always, always, always bring a snack. It's like, 90% of the battle is won with a well-placed granola bar.
And don't even get me started on active listening. It's like, 90% of the time, you're just nodding and smiling, pretending you have a clue.
But seriously, folks, here are some actual tips: Negotiation Basics | Active Listening 101 | Finding Common Ground
And don't forget: More Tips and Techniques