Look man its simple respect yourself. You have got to make up in your mind that you are going to block all of the negative people that are making you disrespect yourself. You are truly capable of great things. Find something you love and poor yourself into it, get a job to raise capitol and then start a company. Some of the most amazing people came from the worst situations you could imagine. You have what it takes!
Look in the mirror. Think about all the things that could have gone wrong in your life that didn't. Sure, we all have problems, some more difficult than others. But just think about how amazing you are. Your face is perfect. Everything about you is great. Don't think that it will relieve pain, because in the end it will just cause more. Take it slow, take it easy. One step at a time. Try to resist. It may be the hardest thing ever, because I know it's not possible to just drop everything and stop. Find other ways to deal with the pain other than hurting yourself. You are amazing and strong. Nothing you deal with in your life can beat you, you have the strength to overcome it.
There really is help for you. This is a more common problem then many parents would care to admit and many people clearly do not understand it. Here is a link that can help you find a lifeline to help. You need help from professionals and those who understand. Not people with my limited knowledge. Good luck.
Ransomes......this is a complicated issue. I never do this as a rule (Just provide a link). But I want you to please tap into the link I have provided below. It has a wealth of help and information for you that is far beyond what I have room to list in an answer. This link is extensive and detailed and I know will provide you with better answers and understanding than we can. Please check it out and get better soon. http://m.helpguide.org/?url=http%3A%2F%2Fwww.helpguide.org%2Fmental%2Fself_injury.htm#2898
I use to have this issue, I knew it was hurting me and others butt it was hard to stop. What worked for me is being with the people I love, I stopped hiding my feelings to my family. Okay so yeah it was hard and sometimes you want to go back to the old times: hurting yourself isn't the answer, there are many people out there to help, you just have to find the right person. ~Kuro
Try to find something else to do instead of cutting. I would try listening to music, writing a story/diary, or talking to someone about what's bothering you. If you feel the need to harm yourself, try getting a punching bag or going to the gym to work off the emotion.
Realizing that you NEED to stop this behavior is the first step, which you are obviously at. Cutting addiction is just like any other addiction....there is a desired result/outcome from the cutting/drinking/smoking so in order to receive the desired effect one must cut/drink/smoke, but the question must be asked "How is this REALLY helping me?" Is causing damage to my body through ANY sort of action actually a good way to live my life? The other thing that helped me was realizing that I in fact did NOT have to partake in self-destructive behavior in order to survive....it was just "something to do" that ONLY had negative effects.....hey, I lived a life full of stupidity for 17 years so I have a clue as to where you're at.....you CAN stop doing this.....
i used to do it before i told my counselor at school about a suicidal thought. i got help through counseling sessions and since then i haven't. maybe you just need someone to talk to that is a professional. it helped me. may seem dumb and like a waste of time, but it does help.... A LOT. you're not the only one out there, many people have this same problem. you just need to brave and strong enough to ask for help.