As the saying goes - breaking a mirror will bring you seven years bad luck. As a kid I was terrified. Seven years is such a very long time (when you are 7 years old!). I broke a mirror and really worried about how long it'd be till my life got better again.
A childhood belief about mirrors

others believed things like this
- when i was young i used to believe that my image on a mirror would come to life if i broke the mirror.Anon
- I believed that if I looked too long in the mirror admiring myself the Devil would appear.— Paul Elletson
- I thought that 1983 went on for 3 years - had to ask my sister who decided how long a year lasted.— Sally
- When I was 6 or 7 years old, I absolutely believed that if a thermometer broke--the world would end. — Suzi
- When I was little I was conviced if you said twinkee in a mirror 3 time a foot would appear. Anon
- I had a fear of seeing a person in the corner of the mirror(most of the time a morlock)— Shane