It is hard to say no, especially to the ones you love.
My kids and grandkids live in Texas, I live in NY. My kids call pretty much every day, especially my oldest daughter, who is 33, she can talk for hours, about nothing LOL. On days where I just don't feel good, these phone calls were like a chore. I love my children and felt compelled to talk to them whenever they called, but was mentally and physically exhausted after every call. That is when my husband said, you need to tell them, " not today, I don't feel strong enough". That is when I came up with a solution, when I feel bad and can't talk, I will unplug the home phone, but have my cell phone on for emergencies only. They all excepted this idea and thought it was a good one. If they just want to chat and I don't answer, they know, that mom is not feeling well, but they can still get a hold of me if it is important. Guess what, in two years, none of them have ever called my cell phone, thank God for that.
Saying no is ok, when you are just to sick to do anything.
I may have been dealt a bad hand, but at least I'm still playing with a full deck. ( most of the time anyway).