Use It or Lose It" tells about how he had picked up playing the guitar before leaving on his mission. Over time while being out on the mission though his skills have diminished due to the lack of practice. He compares this to our lives and how we need to continue to keep our testimony strong at all times so that it doesn't get out of tune and so the Lord can always call on us to be an instrument for him. Overall a great blog that applies to all of us.
Other Nominees include:
Elder Mower's "Check Your Powder"
Sister Williams' ...With the Little Things
Elder Lee's Lockout