Worried about your drinking? Use Dry January to check it

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There are lots of great reasons to decide to go "dry" in January and give up alcohol. Perhaps you imbibed a bit too much over the holidays or want to start a healthy routine and can't afford the calories or the zap in energy and motivation that drinking can bring.

"Or it may be someone who truly is starting to wonder or question their relationship with alcohol, and this is an opportunity to really explore that," said Dr. Sarah Wakeman, medical director of the Substance Use Disorders Initiative at Massachusetts General Hospital.

"For some people saying, 'I'm not going to drink this entire month,' might be really hard, so trying to do so may show you how easy or difficult it is for you," said neuropsychologist Dr. Sanam Hafeez, who conducts classes at Columbia University's Teachers College.

What is the advice from experts on how to have a successful "dry January"? Read on.

It helps to be clear about your goal to make it a habit, said Wakeman, an associate professor of medicine at Harvard Medical School.

"The research we have on goal setting says goals are more likely to be achieved if they're really relevant to you as an individual and not abstract like 'I should stop drinking because drinking is bad,' " she said.