What do the most successful people in the world have in common? Most of them have been fired at some point in their careers. Seriously, all your heroes — Oprah, Steve Jobs, J.K. Rowling, both Edison and Tesla — every artist, entrepreneur and mogul you admire has suffered from unexpected unemployment at some point in their careers.
Of course, if you're just starting to realize that things aren't working out with your present employer, just knowing that you're in good company isn't enough. What you need is a plan — just in case the seemingly inevitable occurs.