We contribute to the literature on inner-outer transformation by developing, implementing, and evaluating an innovative experiential seminar for university students, which systematically covers all five IDG dimensions and touches on all 23 elements. It combines short conceptual inputs with a diversity of practical tools for experiencing and training the IDGs. The seminar targets an interdisciplinary mix of Master-level study programs, with students from many different nationalities. To tangibly illustrate connections between IDGs and SDGs and link to real-life sustainable behavior of students, the cocoa-chocolate value chain was used as a guiding example. Key themes covered were core values, character strengths, mindfulness, emotions, perspective taking, visioning, and changing habits. Among the key take-home messages that students indicated they would like to preserve, the most prominent ones are related to self-awareness and inner compass, followed by complexity awareness, perspective taking, appreciation, and optimism.