Words that can kill

How often that there are certain thoughts that you would like to bring across, yet unable to do so due to certain circumstances? How often you hold back saying out your thoughts for the fear of affecting the other party? How often thoughts are being hold back from being saying out loud?How often thoughts are being kept inside because of the lacking of the appropriate words to use?

I had been in those situations too many times... Too many times, I hold back a lot of stuff that I wanted to share... For the fear of affecting others... Especially the fear of hurting them with my words...