I Feel Overwhelmed By Life

I am so drained and overwhelmed. This week has been incredibly stressful between stressing about my life in general and hearing about my sister and her bf problems just about everyday. I want to tell her please no more talking about your bf I have had enough, I am overwhelmed with my own life atm. Thus, I cannot tell her that because she is my younger sister and I want to be their for her but inside I am dying like saying, please I already have to much on my mind. I have not been eating really this week because I am just so overwhelmed by life atm. I just want to sleep all day and not have to deal with my issues. I feel bad for thinking that about not wanting to hear about my sis and her bf problems but im emotionally drained. I am tired. I just want things to get better, I feel so hopeless and sad. I don't know what to do but just deal with it. I simply feel tired. I feel so alone atm and lost.