Do you know any good sad songs?

Okay, so I am just getting over a stage in my life where things were so bad, I wanted to kill myself. But then I realized I was the one who was thinking WAY too much and jacking it up! So I'm over it... I think! Anyways, I still like sadish songs, so do you know any.. I like songs like "Come Clean" by Hilary Duff, uhhhhh oh! Um "No One" by Aly and AJ, and a lot more. I'm more of the upbeat/sad type. So yep.... any songs are welcome! Whichever song I like best will get best answer! Thankie! <3