It's a broad question ,and I don't think there is a definitive answer .
To dwell in these isles would be a start ,for how many generations would get many different answers
To buy into the Greco Romano ,judeo Christian ,western culture and ethics would be nice ,I'm not talking religion ,but we have broadly accepted these ideals for millennia ,with reasonable results .
To have pride or at least respect for the history ,traditions ,achievements and advances these very small islands have had in the world .
To acknowledge the mistakes made without self hating .
To know all