If you decide to do just one month of The Life Makeover I would encourage you to do just this month.
THE CHALLENGE:
Read your scriptures every day. It doesn't matter if you read all day or just one verse. Just do it. If you are LDS like me, I would start with The Book of Mormon because its been the easiest to read. If you are a Christian I would start with the New Testament, it is much more comprehend-able. If you already read your scriptures every day, try stepping it up. Instead of reading one verse or one chapter, read double the amount. As my seminary teacher used to say FOR MORE POWER READ FOR A HALF HOUR.
I don't care who you are, but I promise this will change you. You will not notice it at first, but at the end of the month you will have a testimony. No matter what challenges and adversity you are facing, they will become easier for you. You will see the hand of the Lord in your life. You will notice his blessings he has given to you. Through Christ you will be able to do anything.
If you want to know my testimony on this subject, please ask and ye shall receive :)