Dr. Lee and Al discuss the importance of Return on Investment (ROI) and the value of your actions. Return on Investment (ROI) is the value you are getting in exchange for your scarce resources. Scarce resources are TIME, ENERGY, EFFORT and MONEY.
ROI is about understanding the value in something like completing a task, developing a skill, practicing discipline, improving your writing skills, etc. Learn how to properly assess the value in something and how you spend your time.