Mindfulness-based Therapeutic Sailing (MBTS) Versus Standard Recreation Therapy Activity (SRT)

This study will be a prospective randomized controlled trial (RCT) of Mindfulness-based Therapeutic Sailing (MBTS) versus a standard recreation therapy activity (bowling) among Veterans with psychiatric and/or substance use disorders. The specific aims of this investigation are to determine whether: 1. MBTS will result in greater pre- to post-intervention increases in psychological flexibility and state mindfulness than a standard recreation therapy activity (SRT). 2. MBTS participants will experience greater enjoyment of the activity than SRT participants. 3. MBTS will result in greater pre- to post-intervention increases in positive affect and decreases in anxiety as measured as compared to the SRT participants. 4. MBTS participants will exhibit improved outcomes, as compared to the SRT group, in the 3-month post-intervention period.