Youth has been praised by many people. They believe that it is the most precious time of one's lifetime，because youth stands for young age and energy. So we should cherish youth and do whatever we like. In my opinion，when we are young，the first thing we need to do is to fight for our future. So we spend a lot of time studying and gain much knowledge. The store of knowledge helps us solve all kinds of problems. When we have enough ability，we are no longer afraid of meeting difficulties. The second thing we need to do is to broaden our vision. As we are young and full of energy，it is the best time to see more scenery. Don't wait for retirement to explore the world. What we see will make us mature and stronger. Let's enjoy the beautiful youth.