Dear student. Yes you can become psychologists after completing your post graduation in psychology. For getting admission in post graduation, psychology must be one of your paper in graduation. As you said your p.g was in Hindi (Hons), then it will be Herculean task for you because in some of the universities it is compulsory to have psychology in graduation. But need not to worry in some of the universities graduation from recognized university is mandatory. Student have to obtain minimum marks mentioned by the universitiy.
To become a psychologists you need to have a better understanding of human and animal behavior. It requires years of education , training and experience. Some jobs of a psychologist requires only Masters degree whearas for some you need to hold Doctoral degree and required certification as well.
All the best.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile