A why has to be for others. It's something you give to the world. It's the reason your friends love you because this is the thing that you give them and it fulfills them. This is the reason your clients love you or your fans love you because you give them something. It's something to offer, that's what the why is.
Studies show that over 80 percent of Americans do not have their dream job. If more knew how to build organizations that inspire, we could live in a world in which that statistic was the reverse - a world in which over 80 percent of people loved their jobs. People who love going to work are more productive and more creative. They go home happier and have happier families. They treat their colleagues and clients and customers better. Inspired employees make for stronger companies and stronger economies.