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. (When someone is nervous their muscles often tense up and their heart rate increases.)

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. (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.) (It's important to show your apperication for someone's support or help)

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.)

Aggressive people often push their own ideas or try to force others to follow them. Someone who is passive, will usually not resist the efforts of others. (An aggressive person pushes or attacks, and a passive person doesn't resist.)

An optimistic person believes in a positive future. optimists see a glass as half full rather than half empty. The opposite of an optimist is a pessimist. (A pessimist sees things with a negative light and has little hope for the future.)

Sensitive people are emotional and have strong feelings about things. It's important to be careful when dealing with sensitive people, because it's easy to upset them. Insensitive people don't seem to be aware of or care about the feelings of others. (It's important to know how to act around extremely sensitive people.)?

A mean person doesn't treat other people well, or with kindness. Mean people often enjoy making people suffer for their mistakes. To be kind is the opposite of to be mean. (Nobody ever asks him for help because he's mean and selfish.)

Conceited people have a very high opinion of themselves. They often talk about how great they are, and tend to exaggerate their strength. Modest people don't show off their strength, but are often very good at what they do. (Modest people are often overlooked in a job interview because they fail to communicate their strengths.)