I'm not sure what the lesson was here... 'don't let my negative thoughts overwhelm me?' Kind of hard to do when it was happening, but looking back at it today I can see how it all played out, and how I let a small problem take root and ruin the whole day.
Trying to be more aware of the negative stuff when it rears its head at the start will help, but thats something I definitely need to work on!
Yeah a healthy dose of reflection certainly helps! We shouldn't be always in a state of reflection but if you have a day that's abnormal, that's ok but just spend a little extra time over a few days or week and try to sort out what got you there and how to get away from that next time if possible. Sometimes it's not always possible to do that but we can certainly try!