2 . Mrs. Obama spoke to the graduates of Martin Luther King Jr. High School on Saturday in her only high school commencement (毕业典礼) speech this year. The ceremony took place in the gymnasium of Tennessee State University.

The first lady told the 170 graduates that she spent too much of her time in college focusing on academic achievements. While her success in college and law school led to a high­profile job, she said, she ended up leaving to focus on public service. “My message to you today is that don't waste a minute living someone else's dream,” she said. “It takes lots of real work to discover what brings you joy and you won't find what you love simply by checking mailboxes or surfing the Internet.”

She said MLK reminded her of her own high school experience in Chicago.“My No.1 goal was to go to a high school that would push me and challenge me,” she said. “I wanted to go somewhere that would celebrate achievements.” “Unfortunately, schools like this don't exist for every kid,” she said. “You are blessed.”

The first lady told the graduates that failure may be a part of their college careers, and that how they respond to difficulties determines what they will become. “That's when you find out what you're really made of in those hard times,” she said. “But you can only do that if you're willing to put yourself in a position where you might fail. Overcoming difficulties has been a mark of many great people,” she said. “Oprah Winfrey was demoted(降职) from her first job as a news reporter, and now she doesn't even need a last name,” she said of media giant Oprah Winfrey. “And then there's this guy Barack Obama. I could take up a whole afternoon talking about his failures. He lost his first race for Congress,” the first lady joked, “and now he gets to call himself my husband.”