I'm definitely a positive person. I always expect things to turn out well, though it doesn't always happen, of course.
When I went to see my GP with a really bad pain in my side, and he told be to go straight to A & E I just assumed that it was nothing, and didn't even take my toothbrush with me.
It turned out to be a cyst on my bowel, which was ready to burst. Luckily 5 days in hospital, and antibiotics, put me right.
"Never trouble trouble, 'til trouble troubles you" is a good motto, but worriers can't always help themselves.