If you run out of things to say, don't say anything at all. If you don't have anything to say, don't say anything at all. If the only thing you have to talk about is yourself, don't say anything at all. If the only thing you can speak about is something negative, don't say anything at all. If the only thing you can do is complain, don't say anything at all. If talking about the lord is an issue with you, don't say anything at all. (if any or all of the above decribes you, apply it to yourself, and you'll probably come away being a hermit).