What people ought to do for Rosh Hashanah I believe is to go out into some forest or place where they can be alone and talk or commune with God. [This is what Rav Nahman calls Hitbodadut.] It is not meditation but rather actual talking from your heart towards God. Part of the reason for this I think can be explained thus: It is too easy to lose who you are. When one is surrounded all the time by other people it becomes too easy to lose who you really are deep inside. (It can get to the point where one's inner essence disappears. All that is left is the consciousness of the crowd.) You think all the time other people's thoughts. You worry all the time what others will think. That is why one must go out to a place where he or she can be alone and talk to God from his heart.
{This would be in balance with learning Torah. I myself was unclear about this issue. The Gemara makes it clear that every word of Torah is a mitzvah which equals all the other mitzvot. Still, to get to Torah for its own sake depends on being in contact with one's good essence.]
