The stresses of selling are much greater than the actual work going on at head office, and, in addition to that, I still have to cope with the problems of travelling, the worries about train connections irregular bad food.
Explanation:
The following sentence in the passage talks about the problem that the people who are in a working profession and who have to travel for work every day have to go from and to suffer from these problems.
The problems that they suffer from are the problems of travelling every day to work in huge traffic jams and then to sell off their goods of the companies in which they work. Then the problem of changing trains and the poor food quality that they get to eat everyday. All this sums up to the bad and hectic quality of life.