I'm 14, depressed, and on the verge of killing myself HELP!!?

I've been depressed since 2010 I said I'm not gunna live to see what 2011 has to offer bcuz I already planned my death, I was gunna over dose! But then things started to look up and I was like maybe god is giving me a sign but in nov dec my life fell apart again. I just wanted to kill myself end this **** whole tht people call life pfft right!! I was scared of over dosing, Incase it didn't work but now idc I've already started stashing pills I know tht when it gets to one of those days when I just want my life to be over i will do it an thts what I want but I want help more than anything i told my mum that I was depressed did she care? NO did she offer to help me? NO did she even pay attention to me when I said it? NO it took alot of courage to tell her tht and thts the response I got ugh. I NEED help but no one listens no one cares that's why I want to end this I hate my life I hate my family I hate everything apart from bieber I'm 14 who doesn't love him? WHAT SHOULD I DO? Just kill myself bcuz NO ONE is gunna listen to me NO ONE is gunna care and NO ONE is gunna believe me! This boy told me to kill myself bcuz I have nothing worth living for I went home that night and was so close to putting a knife through my heart but something stopped me idk what. I can't do this anymore it's too hard :'(