Diary of a Student, "The Last Straw" - Jeff Kinney

Truth be told, Greg Heffley will never change his foolish ways. Someone should explain this to his father. Well, Frank thinks he can make his son stronger and braver, so Greg records organized sports programs and other activities that require courage. Of course, Greg can easily avoid his father's efforts to change him, but when his father threatens to send him to a military academy, Greg realizes that he should improve his behavior and improve his behavior. Otherwise, it will be sent away.