Money is everything but not Sundays
There is nothing wrong if money is the motivating factor in your work, but that should not be the sole reason why you wake up every morning to work. If you worry about Sunday evenings too, then this is a warning sign. Nobody likes to see an end to the weekend, but at least you should be solaced with the fact that a new week is about to begin with a set of new ideas on how you are going to tackle the week with its challenges.