People are often nervous or apprehensive before performing in front of an audience.
People who are really nervous may feel tense, which is the opposite of relaxed.
(Sometimes,taking a deep breath can help a nervous person feel relaxed.)
Someone who strongly believes in their ability to do something is often confident.
The best way to build confidence is to practice what you're going to do until you can do it with ease.
（Someone with confidence can perform at a higher level than someone who is nervous.）
(The key to building confidence and reducing nervousness is effective and frequent practice.)
To be indifferent means to not care one way or the other about something.
If you are indifferent to a person or project, it means that the person or project isn't important to you.
(People who are indifferent are often cold and uncaring about others.)
To be appreciative is to be thankful or grateful for something.
If someone does something nice for you, you should appreciate it.
(If someone does a favor for you, you should show your appreciation by thanking them.)
To be depressed is the opposite of to be happy.
When someone is depressed, they feel very sad.
(Depression can be caused by disappointing news or by failing to reach a goal.)
（It's important to show your appreciation for someone's support or help.）
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