Isifundo sesazi sezengqondo se-positivist uShawn Achor osekela umbono wakhe kulokho kufanele ushintshe ifomula lempumelelo: iyagcizelela ekusebenzeni kanzima ukuze sifinyelele empumelelweni lapho ikakhulu kufanele sikhathazeke ngokujabula ukuthola impumelelo.