When the day you don't wanna go work...

Heard that when the day you feel like not wanna go to work, it may be a sign for you to think there should be some problem with you and your work. The most possible conclusion that may draw at once is: the time to change your job. Right, that may be the end result. But there should be some reasons behind.
Usually, people may blame that the boss is not easy to deal with, or the job is too tedious, or the works are not what they wanna do. For me, a bit because of the works that I don't wanna do. Also, the company really makes me disappointed in several aspects. Well, many would say that every single company are the same. They are all difficult for employees to survive, their managements are difficult to manage, their directions are stupid somehow. Fine.... but they do make money, and you are given checks by them to pay your bills. So what is the problem?