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(2019·襄阳模拟)A popular saying goes，"Sticks and stones may break my bones，but words will never hurt me." However，that's not really true.Words have the power to build us up or knock us down.It doesn't matter if the words come from someone else' or ourselves-the positive and negative effects are just as lasting.

We all talk to ourselves sometimes.We're usually too shy to admit it，though.In fact，more and more experts believe talking to ourselves out loud is a healthy habit.

This "self－talk" helps us encourage ourselves，remember things，solve problems，and calm ourselves down.Be aware，though，that as much as 77% of self－talk tends to be negative.So in order to stay positive，we should only speak words of encouragement to ourselves.We should also be quick to_give_ourselves_a_pat_on_the_back. The next time you finish a project，do well in a test，or finally clean your room，join me in saying "Good job！"！

Often，words come out of our mouths without thinking about the effect they will have.But we should be aware that our words cause certain responses in others.For example，when returning an item to a store，we might use warm，friendly language during the exchange.And the clerk will probably respond in a similar manner Or harsh (刻薄的)and critical language will most likely cause the clerk to be defensive.

Words have power because of their lasting effect.Many of us regret something we once said.And we remember unkind words said to us! Before speaking，we should always ask ourselves: Is it loving？Is it needed？If what we want to say doesn't pass this test，then it's better left unsaid.

Words have power: both positive and negative.Those around us receive encouragement when we speak positively.We can offer hope，build self－esteem(自尊) and encourage others to do their best Negative words destroy all those things.Will we use our words to hurt or to heal？The choice is ours.

【语篇解读】　文章介绍说话对我们有持久的影响。自言自语对我们是有好处的，要怎样自言自语，还有我们说话前要三思。

5．The main idea of the first paragraph is that ________.