I heard once from Rabbi Yosef Blau, Mashgiach Ruchani at YU, a possible reason why we say Hallel on Rosh Chodesh: even though there are no miracles connected with Rosh Chodesh, we say Hallel out of thanks for the opportunity that a new month presents to "turn over a new leaf," and make a new start. So, guys, lets make a new start today! Especially as Nisan is the month of Geulah, let this month be the beginning of our own redemption from this terrible addiction!