This document discusses building small-t theories from teaching practice in Greek English language teaching. It outlines three approaches to professional development: 1) the applied science model which separates theory and practice, 2) theorizing practice by developing personal, situated theories, and 3) building a small theory by identifying tensions in one's own teaching as a starting point. An example is given of a teacher identifying tensions around content, delivery methods, and objectives using a primary English coursebook. The goal is to empower teachers by valuing their own practical theories developed from experience.