Be cool,
collected, don’t panic, don’t worry be happy, life is good,
things will get better (for example the
up and down of dating, work politics, financing issues, personal or group dilemmas, etc.)
Originating from pop singer/songwriter JJMAX’s song “Keep Your Lettuce Tight” released in 2018. JJMAX’s lyrics specifically describe the craziness of dating, but the phrase is used for many situations.