The golden ratio for hanging pictures, often referred to as the '57 inches on center' rule, is a principle used by art galleries and museums worldwide. It means that the center of your artwork should be 57 inches off the ground, which is generally the average human eye-level and considered as the most optimal viewing position. This rule applies regardless of the height of your ceiling or the size of your artwork. However, there can be exceptions based on the specific layout or design of your room. It's always recommended to adjust based on the furniture and other elements in the room to achieve a harmonious visual balance.