<p>This paper argues that Seneca’s <i>On the Tranquility of Mind</i> is a valuable ancient resource for thinking about “progress anxiety,” a condition characteristic of contemporary technosociety marked by compulsive self-improvement and chronic dissatisfaction with one’s pace of development. I read the work as a “clinical vignette” centered on Serenus, a reflective progressor whose anxiety is fueled by his perceived slowness in Stoic self-cultivation. In response, Seneca adopts a “mild treatment”: rather than prescribing a cure from a position of authority, he affirms Serenus’s capacity for self-assessment and seeks relief through a gradual reorientation of his underlying assumptions and values. I suggest that this therapeutic posture closely aligns with core commitments of contemporary philosophical counseling, and that bringing Seneca and present-day practice into dialogue can be mutually illuminating.</p>