Recent research indicates that self-monitoring is a common practice of expert teachers. Through self-monitoring, experts identify their strengths and weaknesses in teaching and devise strategies that help them to continue on a path of professional excellence. The purpose of this article is to propose effective self-monitoring practices for teachers based on this research. These practices include assessing and adapting four fundamental aspects of teaching: (a) instructional skills, (b) teaching perspective, (c) personal characteristics, and (d) knowledge base. By learning to self-monitor, teachers can efficiently and continuously develop their expertise throughout their career. (Contains 1 figure and 3 tables.)