Anxiety problems and anxiety disorders are some of the most impairing and costly mental health conditions in the United States. As a group, the anxiety disorders are also the most common of the mental disorders (American Psychiatric Association, 2013American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). Arlington, VA: Author.[Crossref] , [Google Scholar]), with the lifetime prevalence in the US estimated to be approximately 29% of the population (Kessler, Chiu, Demler, & Walters, 2005Kessler, R. C., Chiu, W. T., Demler, O., & Walters, E. E. (2005). Prevalence, severity, and comorbidity of twelve-month DSM-IV disorders in the national comorbidity survey replication (NCS-R). Archives of General Psychiatry, 62(6), 617–627. doi: 10.1001/archpsyc.62.6.617[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]). No doubt, there are many other individuals who suffer from significant anxiety symptoms but who do not qualify for a diagnosis of an anxiety disorder according to the criteria listed in the Diagnostic and Statistical Manual (American Psychiatric Association). According to the National Comorbidity Survey Replication (Kessler et al., 2005Kessler, R. C., Berglund, P., Demler, O., Jin, R., Merikangas, K. R., & Walters, E. E. (2005). Lifetime prevalence and age-of-onset distributions of DSM-IV disorders in the national comorbidity survey replication. Archives of General Psychiatry, 62(6), 593–602. doi: 10.1001/archpsyc.62.6.593[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]), among individuals with an anxiety disorder, an estimated 23% had serious impairment and 34% had moderate impairment. The economic costs associated with the anxiety disorders are staggering. One study estimated the total costs associated with the anxiety disorders in the US to be $46.6 billion, with about three-quarters of those costs attributable to reduced productivity (DuPont et al., 1996DuPont, R. L., Rice, D. P., Miller, L. S., Shiraki, S. S., Rowland, C. R., & Harwood, H. J. (1996). Economic costs of anxiety disorders. Anxiety, 2(4), 167–172. doi: 10.1002/(ISSN)1522-7154[Crossref], [PubMed] , [Google Scholar]). Fortunately, there are many effective psychological interventions for anxiety.