Does loose lips sink ships or is honesty an open disclosure liberating?

I have a tendency to speak what is on my mind, and I have regretted it many times. Some people might appreciate total honesty in certain situations, but I think it's best to know a person very well, and give careful consideration to what you say. Don't speak too bluntly on the spur of the moment. Make sure it's something you've given a lot of consideration to in advance. This is something I've been dealing with a lot lately, and I'm trying to be more careful what I say from now on.