you must see a mental health professional for practical and emotional support in dealing with your self-harm - referred through your gp. swimming may be a positive influence as exercise is good for mental health and well-being and there is also the added factor of having to have arms etc. on display so may help as a further deterrent for cosmetic reasons also. in order to minimise scarring, i recommend using bio-oil and prompt, clean wound care in order to maintain skin integrity. good luck with things and i hope you do find the motivation to change this part of your life x