Sorry to have to write a post like this and wouldn't blame anyone for ignoring it or having a go at me,I did plenty of that on the walk home. Did the 20mins non stop,so you would say objective completed. Briefly felt it around 14mins but ran it off.
But slower than my best - in distance and pace. That's not me improving,it's me getting worse. It's obvious I can't do this. Thought running my anxieties off would work and it didn't ;(
(added screenshot of what my iPod tracker told me post run)