Stumbling block or stepping stone

Think of an incident in your life that you believed was an obstacle to achieving what you desired. Perhaps it was a promotion at work that you thought you deserved. Someone else was offered the position. You couldn't imagine how this could have happened since you were the perfect candidate. You might have even thought about leaving the company since they obviously didn't know a good thing when they saw it. You finally accepted the reality of their decision and a year or two later learned that the department that included this position was being reorganized. The position was being eliminated. A new opportunity presented itself and this time you were hired. What would have happened if you had been hired in that first position? You may have found yourself in the unemployment line. There are many such examples in our lives. What we perceived as a loss became a gain. Always remind yourself that it will be this or something better. You never know when a block can become an opportunity to something you hadn't imagined prior to this. What stumbling block have you faced that became a stepping stone to something greater?