I Might Kill Myself Soon?

I dont know but its just not worth living anymore. I'm not a morbid person around my friends but when i get home its just blaaah i cant take it anymore. I really think im going to, and I have it planned out. Its my birthday tomorow and things still feel like ****. It just doesnt seem worth it. Am i deppressed i dont feel like it when im around people but when im around my family life is ****. I dont know if ill kill myself but at least tell me how to get help and how to tell my parents I spend half my time thinking about killing myself.