at the summit of (one's) success

at the summit of (one's) success

At the highest possible degree of success at a given point in time; in the most prosperous, prodigious, or prestigious position that can be achieved. The actress, who is at the summit of her success at the moment, is hoping to get involved in other fields of interest. The business is at the summit of success, supplying nearly every industrialized country at the moment.
See also: of, success