"The light of someone's life" can be used to describe a person who is a source of great joy and happiness for someone. There are several synonyms for this expression, each conveying a slightly different nuance. Some examples include "apple of one's eye," which expresses a feeling of deep affection and admiration; "treasure," which implies that this person is valued above all else; and "prized possession," which suggests that this individual is something to be cherished and protected. Other similar expressions include "ray of sunshine," "heart and soul," and "crown jewel." All of these terms embody the idea that this person is someone who brings immense happiness and fulfillment to another's life.
