How to politely tell someone to fuck off by Alba Cardalda

In Cómo mandar a la mierda de forma educada, Alba Cardalda draws on her background in psychology and neuroscience to offer a no-nonsense manual on setting boundaries in personal and professional life. Why is it so hard to say “no”? Fear of losing a job, the pressure of romantic ideals or the dread of being ostracized can keep us stuck in relationships and situations where we feel overlooked, manipulated or unheard. 
This book argues that setting limits is as essential to our emotional lives as road signs are to safe driving: without them, collisions are inevitable. 
Through concrete strategies, real-world examples and an empathetic tone, Cardalda guides readers to communicate their boundaries with clarity and respect, not aggression. The goal is not to become unkind or shut down the world, but to free yourself from patterns of guilt, anxiety and dependency — and to cultivate healthier, more honest relationships where you feel respected, loved and true to yourself. 
Whether you struggle with saying “no” at work, in friendships, within your family or in a romantic relationship, this book offers practical tools and fresh insight. Clear, engaging and actionable, it’s tailored for anyone ready to reclaim their voice and redirect their energy toward a more empowered and authentic life.