Just want to reinforce what Moises & Rollasoc said. I've found that processing to zero (or pretty close to it) daily keeps me from dreading a huge pile o'stuff to process at the weekly review.

The way I remind myself to do the WR is through setting up a weekly-recurring project (like I would put in a tickler file) on my cell phone's calendar saying "P: Turn on computer (Weekly Review)." It is not specific to that day, but I do it just to make sure I see the reminder to do the WR at least once a week.

Additionally, one thing that has helped me is not to look at the WR as a "to-do" but as a "to have done". Merlin's podcast helped shift my perspective on the WR and all my tasks.

Hope this helps.