Some people fall short of their New Year resolutions year after year until they finally find that one kernel that helps them achieve their goals – and for many, it’s implementing the “buddy system,” a Baylor College of Medicine expert says.

“It can be a very effective system to achieve a set goal, as seen in programs such as Weight Watchers and Alcoholics Anonymous,” Dr. Richard Pesikoff, clinical professor of psychiatry in the Menninger Department of Psychiatry and Behavioral Sciences, said.

But there are important things to keep in mind when you decide to pair up with a pal on your New Year’s resolutions, Pesikoff said. The buddy system works best with particular goals, he said. In addition, it’s crucial to pair up with the right person.

Teaming up with a friend is best suited for action-based goals, like quitting smoking or drinking, losing weight or starting a fitness routine. Feeling-based goals, like being more forgiving, are generally not right for this approach.

Probably the most important factor in the buddy stem is finding a reliable partner – someone who has an attachment both to you and to the goal you have set.

“Look at it like a business contract – any contract is only as good as the person you’ve entered into it with,” Pesikoff said.

You should look for a partner with the same goal as you and who has the ability to meet short-, mid- and long-term commitments, he said. You’ll need someone who doesn’t want to let you down, and vice versa.

“You’ve set a certain goal because it’s the right thing to do, but sometimes you need that added foot in the back,” Pesikoff said. “A friend can provide that, and there’s extra motivation because you don’t want to let your friend down. It doesn’t feel good when you leave someone out in the cold, waiting for you to show up at the gym.”

Buddy systems can extend to more than one person, Pesikoff added. Running clubs are a great example of this. “If everyone else in your group is doing it, you’ll be more likely to do it too,” he said.

Goals can take a long time to achieve, usually because it takes a long time for cravings for such things like food, alcohol and cigarettes to disappear.

So be sure to find a buddy who will stick with you for an indefinite period and one that you can continue to turn to if old cravings reappear, Pesikoff said.