I think the biggest problem with family is that you really love them but they drive you crazy at the same time. So on the one hand, you get angry about stupid thing they do or say, and on the other hand you feel really guilty about that.
I don't have much advice to offer. I love my parents and miss them if they are not here. But only as long as they are not here. And then I feel guilty about it and think that we should spend more time together because I am happy that I have them. Until they drive me crazy within one day...

I try to recall that I love them and stop myself if I start to get angry about something they do and I try to show that I love them. But I don't always succeed.