59. Be flexible and realistic
If you’re going into negotiation more aggressively than you need to according to your goal, don’t suddenly get greedy and renege/stall. You also don’t want to take a first counteroffer; present another, present another opportunity to the other party closer to their response. Remember that timing is of the essence, and more important than screwing the last $5 off someone. If you get too greedy you can end up losing the deal.