When is Enough, Enough?

An important part of planning your buisness is your exit strategy. When is that time going to come? Will it be retiring? Selling out? or death? Who knows how it will all play out in the end. Here is something I have been thinking about though. I had a highschool teacher that was a supervisor and officer in the FBI. He was the leader of many prestigous crime investigations and had won numerous awards. This success took him from his home and family quite often and he told himself that if he ever doubted his role in the FBI or stopped enjoying it, it would be time for him to quit and do something different. Well, since I had him as a teacher, it appears that his time came. He was asked to do an assignment that normally would have been his greatest honor. He hesitated on his acceptance and then retired from the FBI. I asked why and he said that for the first time, he was not if that is what he wanted or not. He said he was not enjoying it quite as much so he left and wanted to pursue his lifelong goal to teach highschool. When will it be time to get out? Will I be willing:? These are both things I need to be sure of before I jump in head first.....