Read Proverbs 3:30  Solomon tells us to "strive not with a man without a cause."  The word strive means to fight or to argue with.  So this verse means that we should not pick a fight with someone just for no reason at all.  Sometimes when someone does something wrong to us, we have to tell them what they did.  They may not realize that they have hurt our feelings.  If we tell them, they may be sorry and apologize and everything will be all right.  And then sometimes we have to tell someone that they have hurt our feelings to remind them to be kind to us and to other people.  These are reasons to have discussions with people.  But this verse is not talking about that.  This verse is talking about arguing or fighting with others for no reason at all.  Some people like to pick and to cause trouble just for the fun of making others mad.  Those people just like to cause trouble for something to do.  God, through Solomon, says that we should not do that.  Don't pick at someone just to aggravate them.  You may like to pick and pick, but others may not like it.  Be nice.  Be thoughtful.  Be kind.  That's a much better way to be.