This is a critical aspect for understanding your life!!!

"The core issue in understanding and relating to our current culture is the concept of Worldview. A distinct worldview underlies every cultural form, and our personal worldview determines the degree to which we surrender ourselves to any culture."  J. P. Moreland is professor of philosophy at Talbot School of Theology, Biola University in La Mirada, California.

OR Think of WORLDVIEW this way, ( a bit over simplified, but it should help...) IF you are a political liberal, the lens in your glasses is...let's say, BROWN. You came to a liberal perspective through a multitude of experiences, education, political and family influences etc, etc.  Each time that you look at the world, you see a BROWN tint to it and you have a difficult time understanding why everyone else does not ALSO see BROWN. 

BUT if you are conservative politically, for sake of this illustration you see BLUE. You also came to your position from multitude of experiences, education, family and political influences etc, etc. AND you too have a difficult time understanding why anyone could VIEW things differently!! 

So one VIEWS the WORLD through BROWN lenses and the OTHER through BLUE ones. You can argue all day long about who is right or wrong BUT the fact is you are LITERALLY viewing things from very different perspectives. THIS concept is true with all that you do in daily life and all that you ARE:  Religion, marriage, family, child rearing, national pride, culture etc.  YOUR Worldview (which can change) affects how you think, vote, see the world, worship, raise your kids, etc., etc.  Worldview to some degree is "corporate" {Americans think like this, OR Jews are like this or Ex-Marines or blondes are like that, and so forth) but Worldview is ultimately a personal and individual colored lens that you look through, that stems from corporate experience.  

To help cement this concept, consider this:
Americans in general have a basic worldview and it is very different from the general and basic worldview of Iraq or Mongolia.  THEN, as you begin to look at things more closely you have smaller groups within a country that have slightly or fairly divergent views. 

Example:  Three men, A New York Jew, a Southern Christian and a Midwestern Muslim.  All three are Americans and would fight in the same foxholes to keep our country free, yet in multiple ways, they see many things quite differently.  They view life, family, work, politics and recreation differently.  Don't get me wrong, they have MUCH in common as humans and perhaps even went to College together, YET they see things through a slightly different colored lens!!! - Think about it, are Roman Catholics and Evangelical Christians alike and will they see the world, their families, politics, et cetera, the same way - even though they have much in common?  They are similar YET different because of their Worldviews!!! 

We all have a "plumb line" or a basis of truth by which we gauge all of our decisions and opinions as well as those of others.  That plumb line ultimately determines our worldview.