This study assessed the impact of mindfulness-based group therapy and counseling on emotional intelligence, mindfulness, stress, happiness, self-compassion, and compassion for others among clinical psychology students. A quasi-experimental design was employed involving fourth-year undergraduate students in a clinical psychology program at a university in northeastern Thailand. Fourteen participants were purposefully selected based on slightly elevated stress levels and received therapy and counseling utilizing mindfulness techniques. Data collected through various assessment tools revealed that immediately after the intervention and three months later, participants demonstrated significantly higher levels of emotional intelligence, mindfulness, happiness, self-compassion, and compassion for others compared to pre-intervention levels. Moreover, stress levels significantly decreased post-intervention and remained lower three months later. These findings suggest that incorporating mindfulness-based therapy and counseling can effectively enhance emotional well-being and mitigate stress among clinical psychology students.