The phrase "excessive dedication" is grammatically correct and can be used in written English.
Example: The athlete's excessive dedication to training led to his success in the competition.
After initially agreeing to give her his sperm, even after their divorce, Paul changed his mind, claiming that her excessive dedication to her work would be damaging for her child: "You had no commitment to my happiness," he told her.
Over the years, he said, Moscow's policy was permeated with "a spirit of intolerance and confrontation". Excessive dedication to ideology blinded the country to its true interests, Belonogov said, citing Soviet refusal to help form international financial and economic organizations in the late 1940s.
To some, that might appear excessive, but the fans' dedication to the game was, at least in part, understandable.
Some observers thought Kariya's dedication was excessive last December on a trip to Vancouver, his hometown.
For every account of the "ugly suckling", as Geoffrey Grigson and his friends dubbed him, the sponger or the weaving drunk, there are others of his excessive generosity with money and his sober dedication to work.
Factors that were reported to decrease their quality of life included competition, unprepared teachers, excessive activities, and medical school schedules that demanded exclusive dedication.
Consequently, the treatment for this profile requires a holistic approach that takes into account the cause of their excessive ambition and their associated guilty feelings, in addition to a reduction of their involvement and lessening of their dedication to work in the interest of satisfying their personal needs.
It's total dedication, total dedication".
