Do we really need that much?

After reading "How Much Land Does a Man Need" by Leo Tolstoy, I began to ponder on how much we actually need as human beings.  To think that people in the world have as much as they do and how some continue to add to the amount that is either, given to them, worked for, or found makes you think how much is actually needed to be happy and live a life that where they are satisfied with what they truly have.  It takes a vast amount of thought to ask this question, and then see what is going on this day in age.  Maybe, all the things people in life isn't about being greedy, is it a need to compete with others. Or is it become a need to survive.  The answer of this question will never be certain.  It will only be available to those to look past how much or how little they have...so they can ask themselves if they are truly satisfied.