With any change, a little courage and a conscientious plan with simple step-by-step strategies written in your calendar, financed within your means and otherwise followed through by your current abilities will get you to your goal. 

Change milestones should include meaningful measures that you can measure.  Write down the answers to the following questions in a journal and use them chart your future progress.  Where were you at this time last year?  What long held goals can you begin to implement this year?  Beginning with your birthday, chart out  your goals for this year in 3 month intervals that that you can shoot for and chart your progress.  Change takes time, but time is going to pass whether you incorporate deliberate change or not.  Set small goals for that three-month period and, if necessary, even smaller steps to implement those goals – in a counting backwards fashion.  Allow every three months become a change milestone for you so you can chart your success.  Try starting with something simple such as cutting back on caffeine or getting out and walking.  You'll find that as you have small successes you'll be willing to try larger changes.