Don ' t worry if you have a problem! This is easy to say if you don ’ t have one yourself , I know. But the only people who don ' t have troubles are gathered in little neighborhoods. We call them cemeteries( 坟墓 ). If you ' re breathing , you have difficulties. That ’ s how life is. But believe it or not , most of your problems may actually be good for you! Let me explain. Maybe you know about the Great Barrier Reef( 大堡礁 ) , running some1800 miles from New Guinea( 新几内亚 )to Australia. Tour guides often take visitors to see the reef. On one tour , the guide was asked an interesting question. " I notice that the lagoon( 泻湖 ) side of the reef looks pale ( 苍白 ) and lifeless , while the ocean side is lively and colorful. Why is this? " The guide answered , " The coral( 珊瑚 ) around the lagoon side is in still water. With no challenge to its survival( 生存 ) , it dies early. The coral on the ocean side is always being tested by wind , waves and storms. It has to fight for its survival every day. As it is challenged and tested , it changes and grows healthy , i t grows strong. He added, That ’ s t he way it is with every living thing. " That's how it is with people, Challenged and tested, we come alive! Like coral by the sea, we grow. Physical problems make for a stronger body. Stress makes for a stronger mind. So, you have problems-no problem! Just tell yourself, "There I grow again! ”