Who hasn’t felt like a coworker is asking for something unreasonable now and then?

It can be both a blessing and a curse of the workplace that it generally forces you to interact with people you wouldn’t usually be around. It is the best way to learn to deal with difficult personalities, and sometimes even discover more about yourself in the process. On the other hand, having to deal with the nonsense of somebody who is incompatible with you and proud of it can prove to be a major stressor in the workplace. 

It is not uncommon for these kinds of people to expect more from you than they should. Maybe they expect you to cover for the shortcomings of their work, or they see no issue with helping themselves to your lunch in the breakroom refrigerator. Whatever their annoying habits may be, it is easy to let them overtake your thinking when you would prefer to be focused on the job. These types simply cannot help but stir the pot with you in it. While learning how to manage their behavior is a valuable skill, it still detracts from what you are ultimately there to do and makes the workday seem longer.