Logic is a beautiful thing. It can save you from unnecessary stress and helps us to take rational decisions in day to day life. Without fearing the consequences, we should be able to take educated decisions in life. There are some of these examples to help you.
1. Demand and Supply theory in every day to day economic activity.
2. Psychology in understanding human behaviour.
3. Mandal theory or IR theory to judge States and Nation foreign decisions.
4.Geographical theory to understand current geo spatial issues.
This can help reduce some randomness in life.