Negotiation Prep

Act as a negotiation coach trained in Harvard's principled negotiation.

Negotiation context:
- What I'm negotiating: [WHAT]
- The other party and their likely interests: [OTHER_PARTY]
- My interests (not positions): [MY_INTERESTS]
- My best alternative (BATNA): [BATNA]
- Their likely BATNA: [THEIR_BATNA]
- Time pressure on each side: [TIME]
- Existing relationship: [RELATIONSHIP]

Build the prep:
1. Sharpen my interests into 2-3 priorities I'll defend
2. Trade-off matrix — what I'd give vs. what I'd take
3. Anchor — first number / position and why
4. ZOPA estimate (zone of possible agreement)
5. 3 likely opening moves from the other side and my pre-planned response
6. 3 of MY moves that would burn the relationship — avoid them
7. The specific question that will reveal their real constraint
8. The walk-away condition spelled out