In this video, the teacher explains how to organize thoughts when writing to a prompt. The teacher introduces the concept of using boxes and bullets to plan the different parts of a narrative. They provide an example prompt about things that make you happy and guide the viewer through the process of creating a plan using boxes for the introduction, each point, and the conclusion. The teacher emphasizes the importance of including fun stories to make the essay interesting. They also mention the use of sensory details and provide examples of stories that support each reason. The teacher encourages the viewers to follow the steps and plan their own writing using boxes and bullets.