From the Mantinc el catalĂ account, which I support Catalan, have launched a new campaign with the aim of influencing linguistic habits. "I always keep myself in Catalan, everywhere and with everyone," he added. They want people to take on that motto, when Sociolinguists warn that the use of the Catalan language is sinking and that the survival of the language is not assured.
And why 21 days? This was taken up in the Vilaweb newspaper: "Experts say it takes 21 days to establish a new custom, so the initiative has that duration," he added.