Though not a qualified medical practitioner, Vijayan worked for many years as a pro bono counsellor, using Freudian techniques. Many writers, intellectuals, journalists and political activists have described him as an intellectual mentor. The November 2007 issue of "Samayam Masika" was devoted to articles by a variety of public figures about Vijayan and his influence, both on them personally and upon others, including M. T. Vasudevan Nair (writer, film director, Jnanpith Award winner), N .Prabhakaran (writer, academic), Mohanan Cherukadu (writer), Appukkuttan Vallikkunnu (journalist), P. Surendran (writer), Dr. Abdul Azeez (Doctor), Kunhappa Pattanoor (poet), Umesh Babu K.C. (Poet and political activist), A. V. Pavitran (writer), Anil Kumar A. V. (journalist, political activist), Vatsalan Vatuseeri (writer), Prabhakaran Pazhassi (writer, Professor), Choorayi Chandran (Political activist, Educationalist), N. Shasidharan (writer).