Perks of Being a Wallflower... Were getting to the end of our Story

As we come to a close on the book Perks of Being a Wallflower, I thought I could just use this post to just state some important meanings or a short summary of this great book so far.

Fifteen-year-old Charlie is coping with the suicide of his friend, Michael. To lessen the fear and anxiety of starting high school alone, Charlie starts writing letters to a stranger, someone he heard was nice but has never met in person.
At school, Charlie finds a friend and mentor in his English teacher, Bill. He also overcomes his shyness and approaches a classmate, Patrick, who, along with his step-sister Sam, become two of Charlie's BFFs.
During the course of the school year, Charlie has his first date and his first kiss, he deals with bullies, he experiments with drinking, and he makes friends, loses them, and gains them back. He creates his own soundtrack through a series of mix tapes full of iconic songs, reads a huge stack of classic books, and gets involved in the Rocky Horror Picture Show audience-participation culture.
Charlie has a relatively stable home life, though, with supportive, if distant, parents to fall back on. Unfortunately, a disturbing family secret that Charlie has repressed for his entire life surfaces at the end of the school year. Charlie has a severe mental breakdown and ends up hospitalized.

The next chapter is Charlie's final letter and I am nervous on how he's going to end his letter.