I'm feeling so down.. ..

I was actually planning to help my mum in her little shop today, but I realize that I still have things left undone, I've gotta handle my school work!!!Why can't they be more understanding towards me?!?! Can they stop asking me why am I sleeping late?!?! (I alwayz put their assignments before my own. I try to finish theirs before starting on mine.)Isn't it obvious that I am just trying to help?!?! Why can't they show a little bit more appreciation?!?! If they had realized, I've been helping in the housework day-in-day-out!!! Can't they just treat me betta?!? I'm drained!!! And its just the beginning of the semester!!! I'm already in year 3 I'm very clear that I needed a lot more time than previous years..

All I did just now was ask my younger sister to help my mum in the shop. Her attitude is like I'm asking her to stand in the middle of the road and let a car run over her. So in the end, I'm the baddie who bully my younger siblings. Why do I have to degrade myself(zuo jian zi ji)?!?