What does it take to live healthier?

I am challenging everyone to think and act on what it takes to live healthier.  I do not believe you have to do the drastic measures to begin to live healthier.  What does it take to drink one bottle of water instead of the fourth sugary beverage of the day? If you are a subscriber to Comcast Communications (cable service in DC), what does it take to turn on the "ON DEMAND" feature; search fitness and do the 1 mile Start Walking exercise video in your home? What does it take to smoke eight cigarettes in a day instead of the usual 12?  Simple things that do not create drastic life changes add up to tremendous long term benefit over time if done consistently.  What does it take to live healthier DC?