Negotiation involves finding a solution that satisfies all parties and can include resolving disputes, agreeing on actions, or bargaining for advantage. There are three main stages: planning, conducting the negotiation, and measuring success. Planning is important and involves setting objectives, identifying benefits and drawbacks of proposals, and considering evidence and counterarguments. During negotiations, it is important to set the right tone, clearly present proposals, understand other perspectives, and work toward agreement. Afterward, the success is measured to identify what went well and how future negotiations could be improved.