Process-Experiential/Emotion-Focused Therapy (PE-EFT) is an empirically-supported, neo-humanistic approach that integrates and updates person-centered, Gestalt, and existential therapies. In this article, we first present what we see as PE-EFT's five essential features, namely neo-humanistic values, process-experiential emotion theory, person-centered but process-guiding relational stance, therapist exploratory response style, and marker-guided task strategy. Next, we summarize six treatment principles that guide therapists in carrying out this therapy: achieving empathic attunement, fostering an empathic, caring therapeutic bond, facilitating task collaboration, helping the client process experience appropriately to the task, supporting completion of key client tasks, and fostering client development and empowerment. In general, PE-EFT is an approach that seeks to help clients transform contradictions and impasses into wellsprings for growth.