New Year, New Process
As you settle into your new routine of the Weekly Review, work on adding one more step into it: Deleting. That's right. Deleting. Go through your to-do list and see if there's anything on there that doesn't need to be. And then? Yes. Delete it! Initially, you may feel a bit odd about it, but after a while, you'll realize that you were wasting time and energy worrying about the things you didn't need to do.
We tend to assign the notion of "starting new" or "starting fresh" with the beginning of the year (or month or week), but really you can do this at any time. Even the third Thursday of the month, if you so choose.