1) The author writes a letter to Joe thanking him for his mentorship in Toastmasters four years ago which has profoundly impacted his life.
2) The skills he learned from Joe, such as public speaking confidence and presentation skills, helped him succeed academically by passing literature exams and getting elected to leadership roles in clubs.
3) Most recently, the author won first place in a school speech competition by giving an impromptu speech where he drew on the motto Joe had taught him about how people remember how you make them feel rather than what you say.