Seeing things?

I've been a bit out of sorts lately, feeling down and anxious about the smallest things and getting nervous about things like driving which is a bit weird after driving comfortably for 10 years.

Friends have been especially 'supportive' of my uncharacteristic feelings and informed me that I am losing my marbles! :0) When I turned my car round in a side street of a built-up village this afternoon I wondered if I really had lost my mind when I saw this in my wing mirror.