James 1:19 - "My dear brothers, take note of this: Everyone should be quick to listen, slow to speak and slow to become angry,"" (NIV)
I know that I can sometimes be quick to say something before I really think things through. Either I end up embarrassing myself or hurting someone's feelings. In the end, my quick response can sometimes hurt us both. God asks each of us to do more listening than responding, to think before we speak, and to not allow anger to take us over.
Yet making that change isn't always easy. We develop habits that take root. We need to put effort in through prayer and persistence in order to break those habits. Change doesn't come quickly, but it can come. Whether we are stressed, tired, or just have a tendency to say the first thing that comes in our heads, we sometimes need to take a break and be aware of how our words affect those around us.