Why I left my previous vocation

I really believe that life in general pushed me to make a change in my vocation. I have made a living for many years in sales and servicing of European automobiles. A few years back the Mercedes/BMW market had fallen to a SUV type market. Along with the change of car fashions and vehicles being sold with longer warranties evidently caused a lull in vehicle repairs. I thought long and hard about converting my shops over to NAPA Car Care Centers. The new world believed in the comfort of name recognition. Other shops that had converted were doing very well. Marketing was no longer customer satisfaction. Business had become a data driven profession. To compete now required years of study and boat loads of perception. I realized even with all my years of experience and certificates I was no longer going to succeed without education. I decided to sell the shops and try to finish a past failed attempt at a chemical engineering degree. When signing up for some courses, the college asked if I was interested in teaching automotive. I fell in love with teaching.