Interactive Tool: Are You Ready to Quit Smoking? What does this tool measure? Click here to find out whether you're ready to quit smoking. This interactive tool measures your readiness to quit smoking. The tool uses the stages of change approach, which is based on research about how people typically make behavior changes. The approach suggests that to make positive change, people must go through distinct stages from not thinking about quitting to actually quitting. Based on your answers, this tool will identify the stage you are in and help you think about what to do next.