I love this concept at any age. I was once working with a client who was working in a corporate job that they hated. One day, she saw that the local fire brigade were recruiting and she decided to apply, as did her colleague who was also a friend. They both got through the initial stages but her colleague failed the fitness test and he was out of the process. She made it through the rest of the process and has now been in a job she loves for over three years. Neither of them were preparing for that job opportunity to pop up, but only one of them was prepared when it did.