Blake Shelton and the USO Show Troupe Choir teamed up for a surprise holiday acoustic performance in New York City recently. As part of an interview for the event, Shelton revealed his New Year's resolution, one he can't seem to keep despite revisiting it for two decades.

In a behind-the-scenes footage, Blake revealed that he has made the same New Year's resolution for 20 years and he never sticks to it:  he wants to clean up his language and not drink as much -- but it never works.

The singer and 'The Voice' coach also shared his favorite holiday memory, which is the first Christmas his brother came back from the army and his family was reunited.


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