Luck is believing you're lucky.
There is this stereotype of Icelanders all believing in spirits, and I've played up to that a bit in interviews.
The sun shines on everybody. You've got to keep believing.
By virtue of believing in a Supreme Being one embraces certain mysteries.
I grew up under Thatcher. I grew up believing that I was fundamentally powerless. Then gradually over the years it occurred to me that this was actually a very convenient myth for the state.
I warn you against believing that advertising is a science.