Let it all out

Give Me A Break.

I go to school, I get good grades, and I try my best to not be late.
I go home to do chores, but somehow there's even more.
I am tired, if this was my job I hope to be fired.
I'm a happy person but when I'm tired my mood switch, then to everyone else I'm a bitch.
Is it too late to ask for a break, if I do will any changes will be made?
Will I be called selfish for putting myself first, or can I relax by eating a bowl of ice cream for dessert?
I never have time for myself, and I notice a decline in my mental health.
I am scared that when I start to slack, I might not have a chance to get back. So can anyone tell me?
Is it too late, to ask for a break?