Last year, I joined a paid online group called Oprah Daily. It was low priced and included a number of things I was interested in. I read many of the emails I got throughout the year and enjoyed the quarterly magazines. But when I got the notice to renew, I was in a pretty serious slump about the stalled building of my Spark Empire. I considered letting the subscription go. As with nearly everything related to my professional life over the summer, my first thought was, “What has this subscription done for me this year anyway? I’m no better off for having said yes to it.” But for some reason,…