The two Ts identified by Samagra Shiksha Abhiyan for achieving quality in education are: teacher and technology. This study investigates the experience of flow and creativity in relation to the teacher effectiveness. This research uses hitherto unexplored concept of flow and its influence on teacher effectiveness in the Indian context. Flow describes a psychological state of optimal attention and engagement. The correlational analysis of the quantitative study, carried out in Greater Mumbai Educational District, has revealed a significant relationship between the experience of flow and teacher effectiveness. The regression equation estimates 35.9% as the influence of the experience of flow on teacher effectiveness while there was no significant relationship found between creativity and teacher effectiveness. (Keywords: [I20] Teacher Effectiveness, teachers, creativity, education; [I31] Flow-experience, well-being)