Designing your life doesn’t involve a clear goal, like creating hinges that last five years, or building a giant bridge that will safely connect to landmasses; those are engineering problems, in which you can get hard data on your options and engineer the one best solution. When you have a desired outcome (a truly portable laptop computer, a sexy-looking sports car, or a well-designed life) but no clear solution in sight, that’s when you brainstorm, try crazy stuff, improvise, and keep “building your way forward” until you come up with something that works.