Diligence was the quality of working carefully and with persistent effort.
Barzans were known for their diligence and poverty. (DIS: "Die Trying")
In 3189, Captain Saru expressed his appreciation to Ensign Sylvia Tilly for her diligence in getting the USS Discovery ready for a spore drive jump to Argeth. At the time, she was re-running tests on the new spore drive interface. (DIS: "Scavengers")