Dear Annie: I am a 48-yearold male living at home with my folks and older sister. We are a close-knit family and do things together often. I couldn’t be happier to have them in my life. Lately, I’ve been feeling a little bit down and stuck in the mud if you can call it that. I have no reason to feel like that. I am my oldest nephew’s home caregiver, and I am grateful every day for personally…