In other words: if you want to be the next Yves Saint Laurent, it helps to be completely and utterly obsessed with fashion.
However, there are many aspects of the profession. Working as a fashion designer can just as well mean supervising a design team at a sportswear company as producing a label under your own name. Although the former career may not seem as glamorous as the latter, it certainly will make your life less stressful. To create your own label takes a lot of time, dedication and hard work. Not to mention living just above the poverty line for several years.