We are told that, if you're not confident, you should just "fake it til you make it."
This is great--in theory. In practice, sometimes "faking it" can have extremely real and terrible consequences, which these people found out the hardest of hard ways.
"What was the thing you thought was a lie until you realised it was true?" –– Special thanks to Redditor SYETHOUD, who reminds us that things aren't always as they appear.