Because they don't feel good about themselves and are probably jealous
People pressure others to A. Make themselves feel good B. To make the other person do better C. To make the other person fail at whatever they were doing
they are insecure about themselves
Because there insecure which means they usually don't feel good about themselves so they try to make others feel bad about them so the insecure person can feel better about his or herself
The question is...?
Because some feel insecure about themselves and take it out on other. Some are just horrible people who want to make people feel bad. Also peer pressure can affect the situation.
You boost her confidence! complement her all the time and make her feel good.
It makes them feel better about themselves. For instance, when someone is insecure about themselves they will make fun of other people to make them feel a little better about themselves and maybe forget for a minute of all their life troubles.
Because they're insecure with themselves, and feel "better" by being mean to people that have down syndromes.
If your friend acts like a jerk when your around other people then people will tell you that he or she is trying to impress you. This could be true, but they are saying that to make you feel better. Other reasons are that he is uncomfortable and trying to impress them or he is feeling insecure.
Other people.
They make the weather by how they feel and by how other people make them feel.
They cheat because they are insecure. They obviously feel like they need to prove that they can get someone other than the individual they are cheating on to make themselves feel better.