The ego ideal sets up our standards that are generally approved by parents and teachers, etc. If we obey these standards we feel good about it. The conscience is the opposite. It is composed of things that are not viewed as positive by society. These are things that lead to bad situations for us, and give us feelings of guilt. We have dealt with two of Freud's major theories: those of the conscious vs. unconscious mind, and the id, ego, and superego. There was much more that he accomplished in the study of psychoanalysis:

Life and Death Instincts. This was the theory that we have life (or sexual) instincts that deal with survival and pleasure and the energy that is created by these life instincts is called libido. Things associated with life instincts are love, cooperation, etc. Death instincts is Freud's theory that we all retain a wish to die after we suffer some sort of harrowing event. But these feelings are tamped down by the life instincts. Self-destructive behavior would be a result of a death instinct.

Psychosexual...

He believed that personality develops by the age of five, and is a series of stages during which childhood energies are focused on pleasure-seeking by the id and become focused on erogenous areas. This libido, Freud describes, is the force behind behavior.
Freud had an enormous impact on psychology. Agree with him or not, our understanding of our own personality, human development, and behaviors would not be what it is today.

Bibliography

Boeree, C.G. (2009). Sigmund Freud. Retrieved February 25, 2010, from webspace.ship.edu: http://webspace.ship.edu/cgboer/freud.html

Krull, K., & Kulikov, B. (2006). Sigmund Freud. New York: Penguin Group.

Sigmund Freud. (2010). Retrieved February 25, 2010, from notablebiographies.com: http://www.notablebiographies.com/Fi-Gi/Freud-Sigmund.html

Strupp, H. (1967). An introduction to Freud and modern psychoanalysis. Hauppauge, NY: Barron's Educational Series.