As personal capability
For most people, yes — conditionally on training format. The listening precision, state management and self-communication tools genuinely change how you operate, provided you practise them live with feedback. As book knowledge, the field is interesting; as practised skill, it is transformative for communication-heavy lives. Cost of finding out honestly: a free webinar and a well-chosen course.
As professional edge
High ROI for communication-dependent professions — sales, leadership, HR, teaching, law, medicine-adjacent work. The training pays back through performance in your existing salary, which makes it the safest version of the investment. The certificate adds little; the skill compounds.
As career switch
Worth it with patience and honest math: 12–24 months to stable income, gated on real capability and a domain niche — the salary and career pages carry the numbers. Worth it rarely as a quick certificate purchase; the market pays for evidence.