You probably know or know of at least one person who has had a “breakdown” at work, also known as a burnout. You really don't want that to be you. Not only does everyone talk about you in a pitiful manner, but you will also suffer from severe stress anxiety and a mental breakdown if you cause yourself to burnout.
I dare you to stop a suit (that's a person dressed in a suit) in the street and ask him or her if he or she loves their job. We can all guess that they will probably say no, or say that they don't have time to answer silly questions... That doesn't sound like they love their job to me.