This randomized controlled trial aims to test whether enhancing meta self-efficacy through a self-guided internet intervention improves young employees' work self-efficacy and occupational well-being. The trial will evaluate primary (work self-efficacy) and secondary (three dimensions of occupational well-being) outcomes. It is hypothesized that boosting meta self-efficacy will lead to improvements in outcomes, with effects assessed immediately after the intervention, and at 3- and 6-month follow-ups.