diligence

(noun) conscientiousness in paying proper attention to a task; giving the degree of care required in a given situation.

(noun) persevering determination to perform a task. Synonyms: industriousness, industry. Examples: "His diligence won him quick promotions." "Frugality and industry are still regarded as virtues."

(noun) a diligent effort. Synonyms: application. Example: "It is a job requiring serious application."