You can always buy something in English, you can't always sell something in English.
Rosabeth Moss KanterConfidence is not just in people's heads; it comes from the culture of the organization. It's easier to expect success when working in an organization that has a culture of accountability, collaboration, and initiative. Without this, it's easier - and more self-protective - to assume failure so the person is not disappointed and instead pleasantly surprised.
Rosabeth Moss Kanter