mood swings and age

for a few years now i have had trouble with waking up in a terrible mood...i think its because of the fibromyalgia...but anyway..i am not pleasant to be around when i first wake up...lately i have been trying to wake up in a better mood, but its hard to do when you live around difficult people...my dad is getting to the point where he cant really take care of himself and i have trouble trying to help because i have my own health issues, so it makes it hard sometimes to keep a cheery positive attitude...my dad doesnt seem to think that anyone needs help with anything except him...i love him, dont get me wrong...i have to, hes my dad, but there are other things that i have to tend to...i have a son and daughter and grandkids. now, my kids are big enough to tend to their own needs, but i still like to keep my own house and i just like spending time with them cuz they are pretty good kids....dad doesnt get it...he thinks i should spend every second i have with him...i sit with him as much as i can, but hes getting very grouchy these days and he always starts talking about how worthless everyone is and then i just have to leave...if i stay then i end up yelling at an old man and then i feel terrible....like i said..i try so hard every day to keep a positive attitude, but sometimes the people around me just suck the life out...i am more patient than i used to be when i was younger and it helps me...i suppose these mood swings are a result of irritable people contact as well as a change in my life as i am getting older...i know that women go thru changes as they get older so i am hoping that i will always be able to try to keep a happy personality and not let life or my hormones get in the way...until next time...peace