Thanks, both of you, for the support and encouragement.
Since I didn't get to sleep in the end until about 3.30am, I decided not to feel guilty about staying in bed until 10.30 this morning. Now I am up and giving my breakfast time to go down before I head out for my (almost) daily walk.
In my last job I used to work nights, and it's really messed with my sleep pattern. Sometimes I have no problems sleeping normally, but I go through spells, especially if I'm worrying about something, when I really struggle to sleep. Even after three months, I still feel wide awake and hungry sometimes in the middle of the night, and come 8am (the time I used to finish work) I'm feeling comfortably tired and ready to sleep. I guess it's been made worse because I haven't been working, so I haven't been forced to get into a pattern, so I hope it will get better when I start my new job. It will have to, or I'll really struggle. I can't drive after a night of hardly any sleep.
Breakfast today (same as every other day) was cornflakes and soya milk. I think it was around 350
calories.