I think you reveal yourself by doing. One example is writing. Take Freud, he revealed himself perhaps more than any person before him by telling us his dreams, together with the tools to interpret them. Napoleon revealed himself by conquering Europe.

If you're speaking about the people around you - it's the same. Writing about your thoughts, your actions, this is what really reveals yourself.

Most importantly, you want to reveal yourself to others by revealing yourself to yourself. That is, by revealing yourself you want to become something else than what you were before. (I seem to remember this point appearing somewhere in the actors and acting conversation). By forcing yourself to write you are not only bringing things into words and revealing yourself to others, you are making something of yourself. Similarly, by conquering Europe, or whatever we do in our lives. Some actions don't reveal ourselves, but I would say we should focus all our actions to those which do.

I think that just by being you reveal yourself through your body language and facial expressions. I also think that you reveal yourself in accordance with how you see yourself. If you feel as a victim or if you feel very confident this is how people will see you. I'm not quite convinced, Chris, that it is only through action, and liked your example about writing and revealing yourself to yourself, but isn't writing extremely similar to talking? I think that talking reveals nothing, as you say actions do, but talking is too tricky since it is a lot of the time used in a deceptive way as was discussed in the topics turning stories into reality  as well as the pick up artist.
What is the difference between talking and writing in revealing yourself? And can you reveal yourself by pretending?

Chris: "...but we should focus all our actions to those which do."
Dana: "I think that talking reveals nothing..."

I would respond to both points by saying that yes, in some sense talking can be nonsense but it's not that it reveals nothing -- rather the way in which talking is being used (and the entire situation, the participation in nothingness) itself reveals a great deal. So there is often an action behind the action which speaks. Perhaps in this sense the "actions" Chris describes are those in which the distance between intent and reality is smaller, close to nonexistent, so that the force of one's personality is what drives the final result rather than simply a backdrop for it.

For instance, even here in my interest in the dissonance of opinions which are different, though not opposite, I reveal something of myself.