I've had the same kind of feelings when reading the old testament, but then again, I've noticed the same kind of behavior in my own life. I always tell myself that I should pray regularly because God has answered my prayers and after praying I usually feel better but sometimes I just forget or don't have the "need" to pray. Now that I wrote that it sounds kinda silly.

When I get to the end of the new testament I usually think that "Hey, maybe I should give it another go", but I always end up starting the whole bible again. Feels more, I don't know.. natural. And after reading the prophecy about this has eaven strengthened this feeling.