Please listen to Smart Passive Income Episode #140 with Hal Elrod. The main topic of the show is the power behind having a morning routine (I'm workout on mine).
However, during the interview, he also makes another great point regarding how we tend to slow down in December right before the New Year. Most of us are thinking we'll enjoy some time off, eat a little more, drink a little more, and then hit the gas come January 1st. Notice how people are fighting for parking spots at the gym.
Hal says in reality we should make December our strongest month. Don't take your foot off the gas because that leads to bad habits and those bad habits carry over right into the New Year. Go listen to the show because he does a great job of articulating this point.