I remember two stories that were so good they really affected my real life,
Perry and Jesse by hoodster, this was the first gay fic I had ever read. I stumbled onto nifty by chance and it was at the top of the gay high school section. I was seventeen at the time and reading the story dragged me out of a depression that was caused by my sexuality and always feeling different to everybody else.
The second story I stumbled on that had a big effect on me was Gone from Daylight by Com. I instantly fell in love with the character Taryn and after reading all of the problems he went through I was able to stop feeling sorry for myself and accept what I was.
Thanks to both these stories I'm no longer depressed, and I have a great boyfriend who loves and respects me.