Hey, I can understand how your feeling and kind of know whats happening.
1. Break ups - The are never easy, no matter how old you are or how many relationships youve had they are all different but you learn from them.
2. When someone tells you "your not good enough for them" do you really want to be with someone like that? But, was that his exact words? Sometimes when we are emotionally hurt we blame ourselves for everything as its can be the only reason. 6 months in my eyes is not enough to really know someone but enough to get attched, your heart is still floating in love with this person, and perhaps your trying to shake out of it? But can't find away? You can - You need to write down all the questions that are bothering you. Even about your parents. Write down everything and get it off your chest. Because when you think about things in your head its get all confused and emotional, but when you write things down it releaves stress and helps you to put things into perpective and realise how you can manage things more and deal with the situation and fight back.
3. Your parents and support. It sounds like your caughtin a palce where you need support and no one is listening. - There are other ways like caling a chairty phoneline where they have councellors that can give free and expert advice or even just listen to you. I spoke to Samaritans on the phone and they left me feeling like a weight was lifted from my shoulders.
4. Time - The pain aint going to go away ovrnight, the heart has alot of questions to be answered so it can feel strong again and help you to move on. You need to stay positive and focused, as cutting yourself isnt going to help you. its just making your arms look bad . Turn it around if you were a guy and saw a girl with cuttings on her arms , i would feel a little uneasy.
I would l hope tomorrow will be a new day and perhaps you could get your hair done , listen to you favourite music loud and rock it, have a warm bubble bath - small things that make you happy and build on it. And confidence an happiness will flow back- bit by bit. Remember there is only 1 you. And believe it or not your parents may argue but they do love you - I as a mother will alway have pms and bad days but I still have my kids always in my heart.
Be good to yourself, I'm sure your sweet little a Catterpillar ready to turn into a beautiful butterfly x