L.A.
I used to be totally honest with my daughter and husband.
"I am not feeling well this afternoon, so please be extra helpful for me tonight."
Or "I have a migraine coming on, can you help keep things calm tonight."
"I am in a terrible mood. I mean really bad, please understand I may go off, so please do not take it personally. "
"I am feeling really down today, I need a hug and some quiet time. "
I do this with work mates, My family and friends.
I think being honest and asking for help really, really helps.
I also thank them from the bottom of my heart when they then take care of me or take care to do what is need.
Communication is a great thing.