I used to believe that a "full-time job" was truly full time, where you worked 24 hours a day, 7 days a week, 365 days a year. It made me worry terribly about growing up - I didn't think I could handle a full-time job.
A childhood belief about work

others believed things like this
- I thought if someone worked full time it meant they worked 24/7 and never did anything else!— andalite
- Before I went to a planetarium for the first time, I thought it was just a room full of plants. Anon
- Until I was about 8 I believed that your back teeth keep growing in until you have a full circle of teeth.Anon
- The moon is full of wotsits.Anon
- I used to believe that the full moon was God's flashlight.Anon
- when i was a child,i used to believe that a "million" is a big bag full of coins— Kafka