I believe that one of the most dangerous things in aviation is an attitude of "it can't happen to me".
I totally agree.
Every trip for the last 28 years I've always expected 'it could happen to me'! (when I was in the military, I thought that was what the flying pay was for! Danger money!)
I work hard to be a safe pilot but there are always possible factors over which I could have no control. (eg head or blade failure)
It's always a little thought as I kiss my wife goodbye each morning!