here's some words of wisdom from someone who never felt very wise but has since learned so much, i went to college and graduate school for psychology and worked for ten years with teenagers having troubles like you - after all, i was once exactly the same so i became a great counselor "and friend" It was too hard for me not to get invested and emotional while i was helping them so eventually i decided to leave the field entirely until i was more mature to maintain the right boundaries to truly help ppl - so that is my background overview, i also researched cutting professionally and know why down deep you do it, after all i did it too - find something deeper than your skin, go beyond the sensation or no sensation that you feel emotionally and physically before and after you cut - forget all of that ritual = go into your heart and find the little piece that says I love you. Not the part that says it so freely to others, the quiet part that barely whispers it to yourself. Find it as often as you can and love your whole self, by yourself. it doesn't matter who hurt you who abandonded you or who did anything TO YOU. It is time for you to stop think and love yourself because you know you are worthy, down deep you know it, so love yourself now and find out everything good about yourself and embrace it. regardless of how anyone else treats to....i hope you understand what i am saying, i spend so many years in therapy and talking to friends to get to this point of temporary wisdom, at 40 i have different problems, but to be honest, i am just getting the point now about loving myself deeply and how to take good care of myself. i have alway been a great friend but really hard and harmful to myself....try to treat yourself like you would your best friend or your best pet, my dog was my best friend too when I was your age. I told him everything! Anyway, it's not about getting someone to notice, to listen to help, to save you, or do anything with you....it's about you surviving everyday and being gentle and loving to yourself. Pretty soon you will feel good and strong and everyone will see that. they will love you just the same, you just might not get the negative attention anymore, instead you'll see smiles and peace in your heart and everyone elses. there's a part i am leaving out and maybe i will save it for the end, for those who decided to keep reading to the old lady who wants to help....if you were molested or abused in any way - mentally, physically, emotionally - if someone that you trusted or someone that should have known better did something to harm you - know that there is no amount of cutting you can do to release those feelings that are trapped under your skin. you can not heal through harm...ok, you will never accomplish what you think you can by cutting. but you can by inner strength and forgivess, AND if you are being abused now, get some guts, or find a friend with more guts than you and go to a source of help that you know will believe you and be able to stop it today or first thing tomorrow, it is unacceptable and will only get worse. You can do it. God didn't create you so you could damage yourself further. I am not even that religious, I just remember at your age Madonna talking about her body being her temple, and you know it still seems like it makes sense. Take care of yourself, gently and you'll make it one step at a time.
Peace.