This paper begins by defining critical thinking and setting out a personal history of the author’s journey toward becoming a critical thinker. It considers two common barriers to critical thinking: cultural disapproval of critique; and confusing critical thinking with criticism. In response, it argues that rigorous thinking offers benefits—and not only risks— to cultures as well as individuals. It considers where cultural resources supportive of critique might be found. Further, it argues that critical analysis should be understood (and undertaken) as a process of collaborative support for rigorous thinking rather than as a form of hostile criticism. Some dimensions of critical thinking are outlined, together with questions which might allow readers to apply them to specific contexts. The paper closes with some reflections on the process of writing in which some of these dimensions of critical thinking are applied to the paper itself.