Of course we must think about the future whether it be dreaming or planning, but often we don't take action in the present. Think about how many times people say they'll start something "on Monday" or "next month," like diets, fitness plans, reading more, learning to do something, studying or even relaxation and spending time with friends and family. We do this all of the time without even realizing that there probably isn't any rational reason why we're putting things off.
The New Years Resolution is the ultimate "I'll do it later" excuse. Instead of starting something on New Years Day, you can promise yourself that you'll continue what you've been doing for the next year (and hopefully, the rest of your life). The latter is the only kind of New Year's Resolutions I believe in making because there is history behind the promise to yourself, giving you more motivation to keep going.
You can start anything you want to accomplish right now; in the present. Even if you don't want to start, if you just take the first step, no matter how small it is, you'll already be on your way. This first step makes it harder to put it off any further. The rest of the steps will follow as you improve and learn and you'll gain more motivation along the way. All you have to do is to become committed and find inspiration that drives you. Visualizing what you want in the future can help inspire you now.
Another thing to remember, is the only true failure is in completely giving up on yourself and never trying again. If you fall short of your goal, go backwards, take a break or stop completely, you can ALWAYS start it back up again. Even if you've given up on yourself for a really long time, you can STILL bounce back. Therefore, there is no failure if you don't want there to be.
Check out some inspirational stories and interesting articles below.
CDC article on Calories: http://success.orriant.com/success/index.php/2011/08/calories-matter/
USA article on Maintaining Weight Loss: http://yourlife.usatoday.com/fitness-food/weight-loss-challenge/story/2011-10-12/Analysis-finds-it-is-possible-to-maintain-weight-loss/50745306/1
Another Diet Blog: http://dietdon.com/weight-and-resolutions-picture-yourself-thin/
Free weight loss and blogging site: http://www.extrapounds.com/
Beach Body's has different programs and tools as well as success stories from people who have used their products: http://www.beachbody.com/