Meanmom (love the name) Awesome! glad that you HAVE to buy a new dress cause it's too big! can't wait till that happens to me!
A S.M.A.R.T. goal:
S= Specific, try to be as specific as possible
M= it has to be measurable, like a 2lb loss, or a 2min extension before you're out of breathe
A= Attainable, make sure that it really and TRULY is something that you can accomplish
R= Reward, a reward that fits the goal. Whether that is just feeling good, or getting a whole bunch of loosing quarters in the mail! *This is where I differ from most,other version, they usually recommend the goal be realastic but I feel if it's attainable it should be realistic.
T= Time
Set a specific amount of time you will accomplish the goal in! This is important as if you don't have an end date you really don't have a goal!
Also make sure you write it down and the steps you'll use to achieve your goal and you'll see results in no time!
Here's a link as well to a website about the S.M.A.R.T. goal system.
http://www.topachievement.com/smart.html