The first rule of meditation practice is... do not talk about meditation practice.
The second rule of meditation practice is... DO NOT TALK ABOUT MEDITATION PRACTICE.
Ok, so that's not really what Brad Pitt says in the film Fight Club, but it's close. The idea still applies. In "Wherever You Go, There You Are", author Jon Kabat-Zinn advises beginning meditators to not bother talking to others about their new meditation practice.
I think this is a good idea, although I usually fail epically at it. I'll find myself chit-chatting with someone, talking about all kinds of things, and it just comes out. "Yeah, I try to do 30 minutes a day... blah blah blah."
But I noticed something -- it's really only when my practice is sporadic that I find myself talking about my practice. When I actually get into a routine and follow through for a few days at a time, I find it much easier to demur when it comes to telling others how great meditation is. Actually, it's not just this subject. When I've meditated in the morning, all throughout the day I feel the need to talk less.
It's not that I become more anti-social, but when I'm speaking with someone, I feel more like an observer of myself. I notice, "Hmmm, at this point I would normally say XYZ..." but instead of doing or saying that thing, I feel more relaxed, and I just pay more attention to the other person. Do they seem authentic? How are they feeling? Am I really following what they're saying?
This makes me feel much more present, in the moment, with that person, and that feels pretty good.