The inner versus the outer

I have read in various places of the conflict that occurs between the internal desire (ID), the ego and the super ego.
Is a Christain able to sustain their inner core beliefs in the modern world? For instance, Can a Christain be a good business person? There exist fundamental concepts in Christainity to cast off the desire of the world. "To be in the world but not of the world" is a saying my mother used to always mention to me when I got perplexed with my function in society.
To do business one must interact with the world to make a profit. Here is one of the many problems that creates an internal/exterior conflict for a Christain: to prosper in the world or to prosper in the kingdom of God. A person can not have two masters: "An individual will love the one and hate the other."
I love and hate the world. I love a beautiful sunset. Huge puffy purple, pink, and white clouds billowing across a blue sky that is progressly turning to a dark blue. I hate seeing the homeless, God has made a plentiful world for humanity but someone is not sharing. I love the roar of ocean waves crashing in the shallows of the shore. I hate war. So many innocent people dying for meaningless commodities that are really not needed.
"Humanity can not live on bread alone but needs the words of GOD." An individual following the word of God will lead to bread but how much bread does one have to eat?
Right now I am fascinated by the renaissance and the protestant reformation. The renaissance is divided into Northern Europe and Soutern Europe and the French must have been drinking wine, eating cheese and chasing snails. There is a reaction from the grandiose lifestyle of the Catholic Church versus the austere belifs of some protestants.
The protestants are divided into those who can get and those that don't want to get. I always wonder, actually constantly: what do I need to get versus what I want to get. Why do i need any of this @#$% in the first place. (I love freedom of speech but I am in the process of turning my blue language into a more mellow yellow that can be digested. My conflict gets me so discombobulated that I just use swear words to express my exasberation but I think I have a fairly good vocabulary.)
I am a methodist. In part methodism is a reaction to the pomp and splendor of an uncaring Church of England. The accuisition of wealth seemed to be a means to determine an individuals acceptance by GOD. (To progress in time to the anabaptist of pre-colonial United States and the concept of being saved is an internal feeling, but people want to see it to believe it. OHVA)
William Shakespear said "to be or not to be." I say to want or not to want is the question! I have so many thoughts but not enough time. Well, I leave it up to God but sometimes I try to grab the riegns. As usually: one of the lines in the Lord's pray, "Do not lead me into temptation, but deliver me from evil." To want is similar to covet, To covet is a violation of the ten commandents. The ten Commandments is the word of God. Jesus Christ is the word of God in the flesh. (An awesome representation of the Ten Commandments in action) To submit to Christ we become the living word of GOD? I dont want to live by the ways of the world. The jones can ride of into the sunset leave me with my Good Book.