I want to be happy how do i pick myself up?

Ive been suffering with health problems the last year and a half and i get abuse from my family nearly everday. They have just found out i might have me/cfs. My health problems havdd forced me out of school for the 2nd ti gome and there not a day goes by i wish i had my old life back. I get called everyday by my mum and the rest of my family a fat waste of space and other cruel things. I have a part time job from i was 16 im now 19 and i also attend college at night.to do my maths. I pasted nearly all of my gcses but havent been able to finish my alevels. When i tell my mum i really want to make something of myself she just calls me dumb and says your going no were. I cry alot but anytime i try to tell anyone how i fell they say stop felling sorry for yourself. What should i do to pick myself up?