Critical thinking is the ability to think reflectively and independently in order to make thoughtful decisions. By focusing on root-cause issues critical thinking helps you avoid future problems that can result from your actions.
The following resources will help you understand more about critical thinking.
The importance of critical thinking
Welcome to critical thinking
Use the 5 whys of critical thinking
Teach others how to think critically
Apply critical thinking every day
Use the 80/20 rule to think critically
Use new lenses to think critically