Emotions

I dunno what to make of my emotions right now. GCSEs aren't exactly helping and neither are my parents. They have such high ambitions for me but I can't reach them and they don't see that and as the only child their isn't a second chance child for them. I can't deal with it and I dunno how to tell them. I have considered running away from the abuse and just leaving or shouting back at them but no I can't. I've thought about self harm alot but mah...who cares