Sometimes I cry, I have a mental breakdown, and I move the bracelets I wear 24/7 to see the scars I have left, I jotted down all the 9 possible suicide attemps I could try. Kurt Cobain seems really cool to me and sometimes I watch shows just to see people die or cause harm to themselves. Am I depressed? Should I tell my family?

It's important to know how old you are, and what country you are in. Use Answer, below.
Yes, you sound very depressed. Are you cutting your wrists?
You should tell someone. If you are a child at home, tell your parents, and tell them you want help. A visit to a psychologist/therapist will determine if you need to be hospitalized for a short time.