Final answer:
Freud's initial aspiration to become a research scientist was thwarted due to anti-Semitic sentiments and professional roadblocks, leading him to develop his psychoanalytical theories in psychology.
Step-by-step explanation:
Sigmund Freud's first career aspiration was to be a research scientist, but Freud's 1st career as a scientist was not possible due to various factors. One critical aspect that contributed to the shift in his career was the sociopolitical environment in which he lived, particularly dealing with the rampant anti-Semitism of the time. Being Jewish, Freud faced systematic exclusion from certain academic and professional opportunities, propelling him to pivot towards developing his theories in psychology. Furthermore, limited funding and difficulties in securing an academic position necessary for research may have also played a role.
Freud wanted to be the "Darwin of the mind," applying a scientific approach to explore the complexities of the human psyche. While his initial intentions were scientific, the environment he operated in, coupled with his interests and observations of human behavior, drove him towards the field of psychoanalysis, where he left an indelible mark on the understanding of the human mind and its development.