The rough and tumble world of entrepreneurism is not for the faint of heart, its filled with obstacles, challenges and set-backs. It also gives you the opportunity to live your dream. After 30+ years of building businesses, I recommend that you expect a fight with each new venture. And if its your first time around the entrepreneurial track, brace yourself for physical and emotional impact. This is why mental toughness is the one skill you must have to make it. All things being equal, your level of mental toughness will be what makes or breaks you. Watch this short video (6 minutes) for suggestions and resources.