Ferdinandus Sinaga
Psychologist and Public Speaker
Ferdinandus Sinaga is an Indonesian psychologist, author, and public speaker. He has written several books on psychology and self-improvement. He is also a frequent guest on Indonesian media outlets discussing mental health and personal development. Ferdinandus holds a Ph.D. in Clinical Psychology from the University of Indonesia and is currently working as a senior lecturer at the same university. He is known for hi...
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