Words spoken contain either life or death. Every comment, shout, whisper, and conversation contains that which will build up or that which will tear down.
Do the recipients of your words walk away from you encouraged and empowered or does he or she walk away discouraged and deflated?
Every interaction will not be positive but each can be a gift. There must be room for constructive criticism, negative feedback and correction. These interactions can still come from a place of care and concern and with the best for the recipient in mind.
Rather than think of your words as something you are entitled to articulate, consider your words a beautifully wrapped gift you present to those you come in contact with. The content of that gift is up to you. What type of gift are you giving? A big box of turds? Or a nice and pleasant gift that others will walk around wearing for the rest of the day?