The problem with working for family

I work for my Dad and I really don't like it. I think he thinks that I like it alright, but in reality I'm just working here because I feel like I need to help his manager. I don't mind that he's picky or wants everything perfect. The problem is that he won't stop talking about work at home to me and he thinks of me as his employee outside of work. The other thing is whenever I bring something home for him he'll be like don't bring that home or he'll be like why didn't you bring that home. Seriously, if I didn't live at home I wouln't even be able to bring anything home for him. I tired of him not being able to seperate work from relation and of him continuosly picking at me about things so little. So if you're thinking about woking for a family member definitely think it over before you do.