If you are to work effectively with people who are culturally different, you need to become aware of your own culture and how that impacts on others. As one textbook on professional communication puts it:

‘ we need to become more aware of the cultural basis of our own behaviours, perceptions, beliefs, and values. This enables us to see an interaction from a cultural perspective. It is not just the other person who is displaying culture-specific attitudes and behaviours; we are also doing just that’ (Peter Putnis & Roslyn Petelin, ‘Professional Communication principles and applications’, Prentice Hall, Sydney, 1996, p.76).

Personal values: Personal values are our core beliefs, values, and philosophies that we hold about life, its purpose, and our own purpose.
Prejudice are assumptions people make about the characteristics of members of a cultural or social group.

Ethnocentrism: is the tendency to judge other groups according to the standards and values of one's own group.
Cultural relativism: it is the refusal to make any judgement on the cultural values of other individuals, institutions or cultures.
Culture shock: Culture shock is more than your initial mental adjustment to strange customs, new language, and perhaps water that isn't safe to drink. It is a very real set of symptoms that may include depression, anxiety, increased incidence of minor illnesses, and a sense of helplessness’ (Kathryn A. Wilson http://international.monster.com/workabroad/relocation/followspouse/).

Attitudes that may affect your communication with others
Assumed similarity. The assumption that our beliefs and values are similar to the beliefs and values of others.
Ethnocentrism/denigration of differences. The emotional attitude that one’s own ethnic group, nation, or culture is superior to all others and hence the tendency to view differences in a negative light.