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Now most students are under a lot of pressure (压力). Every year they look different and feel different. They are           year by year. They have to plan things for themselves. They  seem  to be unhappy.If they know the secret to be happy, it is easier for them to be happy. Kate is a middle school student. She is much         than before. “I couldn’t find any happiness for a long time. In the past, I cared too much             what other people thought of me,” said Kate. “At school I was very shy . When I spoke in class, my face turned red,              I felt that my classmates were all looking at me. Now I feel a lot more             when I’m talking with people around me. I’m sure that if you worry too much about what other people think of you, you will be unhappy.”