Less a phrase and more just taking a deep breath, holding it for a good while, letting it out. Or stare into space with my hands on my head, then giving a huff and getting back to it.
More inline with your question though, I knew a good man once that was fond of sayings and turns of phrase, he used to say, “It’ll be OK in the end. If it’s not OK, it’s not the end.”
Less a phrase and more just taking a deep breath, holding it for a good while, letting it out. Or stare into space with my hands on my head, then giving a huff and getting back to it.
More inline with your question though, I knew a good man once that was fond of sayings and turns of phrase, he used to say, “It’ll be OK in the end. If it’s not OK, it’s not the end.”