There’s a big difference between a single, quick interview and a long, intensive interview process. At the end of the long process, you may have met with several managers. You have information about the company from the interview team, and you may even have an idea about how many people you’re competing with and their backgrounds. You’ve invested a lot after several interviews: time, energy and perhaps even a sample of your work or a plan for what your first sixty days will look like. If you don’t get selected, it’s bound to be a letdown. It’s easy to start second guessing yourself.