Rabbi Wachsman on the idea of renewel.

Simcha comes from newness.  But how do we get newness if we daven the same thing everyday, we learn the similar things, all of our avodas Hashem follows a similar path.

Rabbi Wachsman explains this by saying that there are two kinds of products of an animal, there is honey that comes from a bee, but really it is coming from the nectar, it is not really coming from inside of the bee.  Then there is milk that comes from inside of the animal. 

When we daven and learn, is it coming from inside of us, or is it coming from outside, from the page.  We have to take what we are doing and make it part of us.  Then when it comes out, it is really coming from inside of us.

The way to keep our avodas Hashem new is to make sure that we are truly internalizing it before it leaves our mouths and our minds.