I often look longingly at my bed as I make it after breakfast!
We all have good and bad days. I think a general lethargy is fairly normal for what you describe.
You have a stressful job which comes into sharp focus when the family you rarely see are visiting.
I don't think you need vitamins but happy company, appreciative friends and something to look forward to.
I always get depressed when my AC return to NZ.
Prayer ban at Katharine Birbalsingh’s school is lawful, High Court rules .