Set short-term, incremental goals. Work up to larger plans later. Never put yourself under the gun right from the get-go. If you do discouragement will be right at your doorstep. You'll quit! Remember your New Year's resolutions.
Set incremental time frames. Short-range goals are very important. Begin the first month and increase a little bit each succeeding month. Don't give up too early in the game give yourself a chance to succeed.
Set up too big a goal and you know nothing happens! Most of us throw in the towel rather than work slowly to the next plat eau. Remember all those big goals in the past how long did they last.