Most of us have made life changing decisions in a matter of minutes or even seconds. Just scan your past and you will find many examples. This happened because we were forced to do that due to unexpected turn of events. This also means that we are capable of making good decisions in the shortest possible time.But in our day to day life, we keep thinking over and over again about small issues. Thinking time can span days or even months. This has one huge problem: we keep postponing the real action. The time discipline of thinking tools liberates you from this thinking rut. You are asked to practice a particular tool (PMI for example) within 1-5 minutes. With some practices, you brain adopts this discipline for your day to day thinking and helps you become a doer rather than a philosopher.