As a very young kid (around 7 or 8) I got a childrens book called "How to dig a hole to the other side of the world" and I knew my purpose in life. You can actually see several of the pages at Amazon.
Digging everyday after school behind the garage for several weeks got me a hole I could barely climb out of. When my parents finally realized I was actually making some possibly dangerous progress they filled it in as I sobbed uncontrollably. As obviously silly as it is, I'll never forget how upset and bitter I was that day.
A childhood belief about around the house

others believed things like this
- I used to believe that if you dig a hole in the ground and put pepper in the hole, the ground would sneeze.— Cookie
- I used to think I was a vampire, and that my parents were trying to kill me by making me go to school. — Max
- I used to think that a company had boats all over the world making waves, and airplanes making cloudsAnon
- I used to think that if you had a garage sale that meant you were selling the garage!— ~Curtis~
- i used to believe that the world couldn't have possibly started before i was born.— emma
- I used to believe that a cat's butt hole was on the tip of his tail.— PANTS