keep calm and carry on

Remain steadfast and composed in the face of adversity. Originally the slogan of a motivational poster produced by the British government ahead of World War II, the phrase has, since the early 2000s, become popularized to the point of cliché. A: "I don't know how we're expected to resolve so many software issues ahead of launch." B: "Don't worry, we can do it. Keep calm and carry on!" The Prime Minister is imploring the nation to keep calm and carry on as it heads into the worst economic crisis in decades.