This book offers a comprehensive introduction to Intensive Short-Term Dynamic Psychotherapy (ISTDP), covering its theoretical foundations, core techniques, and practical applications. The author first introduces six key psychodynamic concepts essential for ISTDP in an accessible, jargon-free way, then shifts focus to building strong conscious therapeutic alliances. Finally, core ISTDP techniques are clearly explained and demonstrated. Through clinical examples and real therapy transcripts, this book illustrates how to effectively integrate ISTDP to resolve unconscious conflicts by addressing feelings, anxiety, and defenses. Whether you are a student or a beginner therapist new to ISTDP, or an experienced practitioner looking to revisit the fundamentals of this exciting method, this book serves as an accessible, relevant, and indispensable resource.