My world just got a whole lot bigger!
I have always been fearless . If you look at a litter of puppies or kittens, there will be the outgoing, confident ones and the nervous or shy ones. However, if we are just talking about losing confidence because of age, the only thing I have noticed in myself is that I use 'Spellcheck' more often. I have always had a photographic memory for words, but occasionally I feel unsure about the spelling of a word that I have always known.
I drive many thousands of miles on my own, planning my route with maps, which is half the fun - no satnav for me. I also walk alone in very isolated places. The only time I have felt nervous was when I lived in Chelsea and had to walk home from the tube station in Sloane Square.
I do worry about my family, but only when I know, or suspect, that something is wrong.