Final answer:
The traits important in work according to the given sources are perseverance and diligence, emphasizing the significance of grit and persistence over talent or IQ for success.
Step-by-step explanation:
According to John Jacob Astor and the cabinet's marker, the traits that are important in work are perseverance and diligence. This is supported by a study that indicates that grit and perseverance were found to be better predictors of academic success and achievement than talent or IQ. Traits like crystalline honesty, clarity of goals, and persistence are extolled as praiseworthy and necessary for success, aligning with the importance of conscientious work and overcoming obstacles through persistence and personal courage.