We had a warm day after a week of freezing cold and my youngest wanted a  Jamba   JMBA -1.08%  Juice, so I took him to get his Jamba and hit the phone store on the same trip. The young man taking care of us at the phone store was a dynamo. He got us what we needed and switched our family plan so that we’ll save money on our phone bill. I asked the young man about himself. “Oh no,” said my twelve-year-old, rolling his eyes. “This is my mom. Now she’s going to ask you about your career plans!” The young man didn’t mind talking about his plans. His name is Yaz. Yaz had already given me his phone-company  business  card when I walked into the store. When I asked him about his career plans, he pulled two more business cards out of his pocket and gave them to me. “This is my dj business,” he said about the first card. “I dj for weddings and other events.” “This other card is my entrepreneurial business,” he said. “I design websites now and do social media ma...