Art of Saying No and Setting Boundaries

Active story on boundary-setting techniques. Receives minor enrichment from 'The Discipline of Becoming Harder to Manipulate' (practical advice on separating reactions from responsibility, tolerating disappointment). Previously enriched by 'How To Handle A Toxic Person' (Stoic filter) and 'Being Available Isn't the Same as Being Necessary' (reframing availability vs. necessity). No major new inputs this round.