Answer to Question 1
Workaholics are people who labor excessively hard and compulsively. They tend to feel competent and energetic and identify with their jobs, but they generally do not take pleasure in their work.
Answer to Question 2
Your resume is your foot in the door. It should show an employer how and why you are qualified for the job so you want to present your skills and experience in a way that will have the most chance of getting an interview.