How I am attempting to cure my mood:
1. Switch off my work computer.
2. Ask friend if we can make it another day please.
3. Take Django outside for a walk round the garden and fill up the bird feeders. Watching birds can bring a smile to my face no matter how down I am.
4. Light the woodburner.
5. Make a cup of tea.
6. Sit in front of woodburner with shoes off, reading about Homo erectus.
It's working so far...