In the second year of university study, we started a course in psychology. Prepod was a corresponding, such an evasive type. On the first pair, he gave a jokeful advice for the future: always go to work with a folder of documents, the table of the worker also filled with pieces of various papers, carry them with you even to the dining room and then the bosses will consider you a hardworking and valuable worker, as if you did not roll a fool. A month after this lecture, the lecturer was appointed dean. I still remember that advice :)