[tweetmeme source=”elizabethev” only_single=false] I can hardly believe it. I ran 18 miles and I– this is the really unbelievable part– kind of enjoyed it. It’s amazing what you can accomplish with a new pair of socks, fresh jams on the iPod and a positive attitude. After taking a brief hiatus from running in the freezing cold during our vacation, coupled with dip in overall enthusiasm for this whole marathon training thing,…