Act as a [licensed family therapist] with [10+ years of experience in conflict resolution and boundary-setting]. Provide a step-by-step guide on how to establish and maintain healthy boundaries with in-laws or extended family members. Include [specific communication techniques], [examples of assertive but respectful phrasing], and [strategies for handling pushback]. Address common challenges such as [unsolicited advice], [overstepping parenting decisions], or [unexpected visits]. Ensure the advice is practical, empathetic, and adaptable to different family dynamics. Offer both short-term fixes and long-term relationship-building approaches.