You can start working on the challenge now by making a list - a list of verses that you would like to memorize. I have found that if I don't have a list of verses to work on, I will procrastinate and end up memorizing nothing for the week.
Here are a few verses from my list:
1 Peter 1:13-15
There are many more, but if you're like me, the list grows quicker than I can memorize!! What are some of the verses on your list?