Stay elevated
An idiom used in a conversational exchange between two or more persons, usually as the persons part from one another, to mean "keep your spirits high."
Bob: "Man, I'm worried about this presentation that I have to give tomorrow. I hope that I don't mess up."
Tom: "Oh, Bob, you'll be fine. Now go home and get some rest. Stay elevated, my friend."
Tom: "Oh, Bob, you'll be fine. Now go home and get some rest. Stay elevated, my friend."