i wanna kill myself

i don’t know why i want kill my self!! i just know i have no interest in my own life.i wanna suicide!!!
i think,i’m in depression.i just bored with my life,it’s pain for me! i have some this types of prob;ems which i could not share with any one.now i’m just 18 years bt still i hav no interest in my life.Friends can u say what can i do now.
I HATE MY LIFE.