Every couple of years, that friend resurfaces. She’s a little flaky but earnest in her commitment to “explore life to the fullest.” One moment she’s preparing to become a welder, then she’s found her calling as an event planner, and after that she realizes that all along she really wanted to be an EMT. Each phase consumes and transforms, and her identity is entirely wrapped up in her latest passion project. She might be wildly successful or she might be incapable of holding a job. Her optimism is both inspiring and annoying…