Pamela Slim is a seasoned coach and writer who helps frustrated employees in corporate jobs break out and start their own businesses. Her blog, Escape from Cubicle Nation, is one of the top career and marketing blogs on the web.  A quote I pulled from her site that is a Pam Slim original I have to repeat here is, Entrepreneurship at its heart is aligning your purpose for being on earth with a business idea so compelling that you simply must do it, despite the fears that hold you back.