Have you ever had momentum going when all of a sudden you miss one day and everything comes to a screeching halt? I had that happen to me this week with the gym.  The baby woke up in the middle of the night, so I slept in (accidentally) and missed the gym.  The next day it was so easy to not go to the gym... then finally today I was able to pull myself out of bed and get to the gym. Today's discussion revolves around how having momentum can really help in any discipline. Activation takes a lot more energy than continuing.  If you can avoid that activation energy use, you will probably continue further.