Proverbs 13:2 A man shall eat good by the fruit of his mouth: but the soul of the transgressors shall eat violence.
3 He that keepeth his mouth keepeth his life: but he that openeth wide his lips shall have destruction.
Hers in these two verses we see one of the secrets to life.Again it contrast to different kinds of lives. We know that if we speak good things about whatever we dealing with it will say a lot about who we really are. We can see in these two verses that a man of good words prospers, but a man evil words sets himself up for destruction. A lot times it is best if do not say anything in some situations because we may say something we regret latter and we can not take it back and could regret it forever. Those who run there mouths all the time usually do not know when to stop because they are trying to cover up what they said to start with.If you know much about the book of James it lets you see how deadly the tongue can be.