This document discusses how habits and character are formed through our thoughts and actions. It states that we have complete control over the habits and character we develop through controlling our thoughts. It provides two examples: 1) A cashier who considers embezzling funds and how entertaining that thought can grow into an uncontrollable action. 2) A young man who starts drinking socially but develops an addiction by continually entertaining thoughts of drinking. The key is that we must banish undesirable thoughts from our minds as soon as they enter to avoid developing bad habits.