Despite decades of progress in teacher education and curriculum design, many English language educators experience what might be described as a “mid-career teaching crisis,” observing that novice teachers often revert to traditional, teacher-centered practices that prioritize teacher talk over student engagement. This lecture argues that structural constraints within formal classrooms (such as limited instructional time, rigid curricula, and institutional pressures) can inadvertently suppress the very pedagogical principles educators aim to promote. Drawing on Paul Nation’s Four Strands framework for a balanced curriculum, the lecture highlights the largely untapped potential of informal language learning as a key avenue for meaning-focused input and output. Moving beyond the so-called “practicality myth” in language teaching, and adopting a post-method perspective, the talk demonstrates how engagement in authentic, interest-driven activities can address the enduring challenge of learner motivation. The presentation further explores the transformative role of GenAI in bridging formal instruction and informal acquisition. Focusing on incidental vocabulary learning as a case in point, this lecture illustrates how the “98% lexical coverage” principle applied in extensive reading can be operationalized through GenAI. Specifically, GenAI can generate highly personalized, scaffolded texts embedded with targeted lexical items, thereby optimizing conditions for vocabulary development in ways that are difficult to replicate through traditional materials. The talk concludes by reimagining the role of the language teacher, not as a primary source of knowledge delivery, but as a designer of rich, AI-enhanced learning environments that extend far beyond the classroom.