The phrase "does for one" refers to something that is a great help or benefit to someone. Synonyms for this include "benefits," "assists," "supports," "encourages," "enhances," "improves," "uplifts," and "advances." When something "does for one," it can make a significant difference in a person's life. It can provide them with the tools and resources necessary to succeed. Whether it is in their personal or professional lives, having something that does for one can be a game-changer. So, if you want to express how much something is helping you, consider using one of these synonyms instead of the same old phrases.