Answer:
A positive attitude, high-esteem, and enthusiasm contribute to career success because they make the worker approach their activities, projects and ideas with a positive mindset, trusting in their abilities and anticipating a positive result, facing and overcoming their fears and always looking to the good side of things.
On the other hand, if the person were pessimistic or had a bad attitude, they would face their projects with doubts and fears, putting them aside in the face of the first adversities.