Thanks so much, Lorien.
This is really helpful stuff.
It happens sometimes when I feel 'ok' and it's fairly short-lived. This is one of the more prolonged periods though and my body is tired (gritty eyes etc), but my mind is very much not.
It will go away, I am overwhelmed, and have been doing a lot, but it always passes. I guess sometimes when I'm like this, I struggle to stop and actively slow down because I get scared that'll lead to a negative headspace again so have to keep the momentum going. Truth is, not slowing down is more likely to lead to a bad patch because I'll exhaust myself (without really feeling it at the time) and crash.
If I'm honest, people keep telling me that I'm doing really 'well' at coping with this social distancing/partial lockdown - so far much better than anyone expected - that I'm worried people will be concerned if I have a slow day. Not that I have to tell anyone.
I do need to be sensible though, because no one can afford me to go mad right now. So. I've got some audiobooks to listen to that I haven't touched yet, so will definitely give those a go - and also have noise cancelling headphones. I've got work 9am - 1pm today, then interview at 2:15pm, then I will go for a short, slow walk and take the rest of the day to rest and listen to Stephen Fry telling me a story.
Thanks again.