Haven't we all tried to convince job seekers to apply for more than one job at a time? Maybe they just want to live the high life that's only possible on Employment Insurance as long as possible. Anyway when people do this the likelihood is that the component of their emotional tone is likely to resemble this curve.
Need one mention that is this not fun?
Here's the extraodinarily simple alternative: Always keep several job hunts going simultaneously. That greenish curve along the top suggests what might happen to your general emotional tone. Certainly any one of the rejections will cause a dip; however, because you will be experiencing some level of interest—or even excitement or exhilaration—in another job-hunting cycle, perhaps the dip will not be so big. This will help you to do better work in all of your job search.
Should I come clean and mention that this idea is due to someone called Priscilla Claman, and that I found her article on the Harvard Business Review blog? And I used Wolfram-Alpha to make the plots from which I derived these graphics.