Am I being too cautious about covid?

I am still going almost nowhere and meeting no-one except sometimes seeing a friend for a walk and going to the supermarket at quiet times & sometimes the post office etc if needed. I still wear a mask to the shops.
As an older person, 68, with a relative living with me who has health problems, not CEV tho, am I being too cautious?

Is anyone else still being as cautious as this?