假定英語課上老師要求同桌之間交換修改作文，請你修改同桌寫的以下作文。文中共有10 處語言錯誤，每句中最多有兩處。錯誤涉及一個單詞的增加或一個單詞的刪除，其他錯誤為單詞的修改。
增加：在缺詞處加一個漏字符號∧，并在其下面寫出增加的詞。刪除：把多余的詞用（\）劃掉。
修改：在錯的詞下畫一橫線，并在該詞下面寫出修改后的詞。
注意：（1）每處錯誤及其修改均僅限一詞；
（2）在答題卡上答題；
（3）只允許修改10 處，多者（從第11 處起）不計(jì)分。
    Confidence is very important in daily life.It is helpful to develop a health attitude.A recent study shows that the people who are more confident are happy.They can have more chance to make themselves successful.When you are not confident，you can't do well that you want to do.But how to be more confident？Here is some advices.First，try to speak in a loud voice so that people can hear you clear.The high voice can let you to become more confident.Then，physical exercise makes you tired and completely relaxed.A strong body helps you be full confidence.It's also important to encourage yourself.Say to yourself that you can do it before do something.Write down a list of things you did during the day to see how many things you have done well.Give yourself praise for the good things you have done.