This study evaluated a self-guided internet-based intervention for gambling problems. The intervention is called Restart and lasts for eight weeks. The researchers recruited adults who were seeking help for their gambling problems. They randomly assigned 79 participants to the intervention group (IG) and 77 participants to the control group (CG). The IG had immediate access to the intervention, while the CG was on a waitlist for eight weeks. Both groups improved their gambling problems after the eight weeks, with no differences between the groups. The IG also improved on depression symptoms, and the CG had fewer false gambling beliefs. People who were older, had more severe gambling problems, had more depressive symptoms, and had anxiety symptoms benefited more from the intervention.