Learn to negotiate well — the skill of reaching agreement when people want different things, taught the way it is actually studied (the Harvard “Getting to Yes” principled-negotiation canon and the research behind it). Master the core ideas: separate interests from positions, know your BATNA (best alternative to a negotiated agreement) and reservation point, find the ZOPA (zone of possible agreement), and tell distributive “claiming” (dividing a fixed pie) from integrative “creating” (expanding it with trades across differing priorities). Practice the moves: when an anchor helps or hurts, how to make and read concessions, how to reframe, how to use objective criteria, and how to handle hardball tactics without escalating. Every item is a realistic scenario with one defensible best move, and the explanation names the tempting mistake. Scoped to good-faith, durable deals: the best answer is the honest-and-effective one, never manipulation. Pairs with Persuasion (moving one person to a view); negotiation is specifically about reaching a joint agreement across competing interests. Educational judgment practice — not legal, financial, or professional negotiation advice.