It doesn't help that both my husband and I clearly have a light case of the virus. It's a mild fever and a cough, and it appears to be getting better. (Certainly we are taking no chances! And have been in the house for 8 days already.) But feeling crappy only adds to the difficulties.
And yet I know we're the lucky ones. We both have worked at home for decades, so the "lifestyle" is nothing new; we aren't in danger of losing our incomes; we have health insurance; and we have cash in the bank.
One thing that has helped is setting up regular Zoom meetings to get together with friends. No agenda, no "let's try to concentrate on work" chat, just... hanging out together.
As Spider Robinson wrote so eloquently: Shared joy increases, shared pain decreases.