Interesting.. but I believe your guilt is misplaced.
"Think of things at an individuals point of view and then expand it to include those around you, permutate it to infinity and then you can make a change."
To blame ones good fortune for the suffering of the world is both a manute way of seeing the forces of macro-economics and social forces and is an oversimplification of things. I believe that Mother Teresa's comments were not written to give us (specially those who belong to the Old Faith) a sense of guilt for our affluence but is more of a call for all of us to give and share willingly our blessings in life to those who are less fortunate.
God gave you the skills and talents to do good in life and if it happens that you are successful right now, it does not follow that you have destroyed another man's life in another part of the world. If you argue that by paying taxes to your government has also caused suffering to children in another country (oh, hell let us just say Iraq for the sake of arguement) it can also be said that taxes you paid were also used to aid humanitarian causes in other parts of the world as well. Do you see my point?
There is no black and white in this regard.
What I suggest you do is to live your life as rightfully and as productively as you can. The smallest things that you do in your daily life would eventually affect others... and just remember to pass all that is good in you to your children so that they, too, can do their own small parts today and in the years to come.
"It is no use to fret on things that has passed or on things to come. It is but a fools wisdom to think of things that are not... A wise man seeks to change himself first in order to help others change."