Just a thought - I printed off the list of symptoms from thyroiduk. I colour code the symptoms; Red for ones which seriously undermine your wellbeing, yellow for symptoms you are managing, but which could be improved and green for symptoms which have improved. I leave the few which don't apply.
I've done this three times now; at diagnosis (last Feb) for Oct when I felt good, and last week when I suddenly felt very ill again - confirmed by a raised TSH.
The visual effect of this traffic light system highlights immediately any issues and also where improvement has been made - then lost again.
It has a lot of impact to have not only tracked/recorded the symptoms, but to show deterioration/progress.
I'm tracking my symptoms in a methodical way and preparing this for evidence to show my GP if my increase in meds don't have the effect I hope for. The list is here;