Stress Toolbox for Healthcare Providers in Mexico

The goal of this randomized wait-list clinical trial is to test in patient facing Mexican healthcare providers the efficacy of the Integrated Toolbox for Healthcare Providers (ISTH) on psychological functioning, well-being, occupational performance, and peripheral inflammation. The main questions this study aims to answer are: * Does assignment to the ISTH predict reduced psychological distress and increased well-being? * Does assignment to the ISTH predict improved occupational outcomes and social-emotional competencies? Participants will be randomly assigned to either the ISTH, a 12-week synchronous and app-based well-being training or to a wait-list control condition and complete assessments 8 times over the nine-month study period. Researchers will compare the ISTH and the wait-list control group across time to evaluate ISTH impacts.