Wake up on the wrong side of (the) bed

Wake up on the wrong side of (the) bed / Get up on the wrong side of (the) bed - Levantarse con el pie izquierdo

to begin the day feeling unhappy and uncomfortable

I hope not to get up on the wrong side of bed tomorrow because it's monday and I have a meeting. - Espero no levantarme con el pie izquierdo mañana porque es lunes y tengo una reunión.