The definition of 'Entrepreneurial seizure'

Michael Gerber, author of E-Myth Revisited, defines an entrepreneurial seizure as "the moment the entrepreneur decides it would be a great idea to start his or her own business."

A slightly different definition, from super-angel Jonathan Milner - talking from the viewpoint of an entrepreneur, is that it's "the incredible frustration that the world is not the way you want it to work".