History does not define your present absolutely, although it certainly influences it. It could be argued that if you did not like the society in which you find yourself and therefor seek to change it, or succeed in that change, that you are responding to history and that therefor history has defined your action but the sense in which I mean that it does not define your present is that you can accept the present that history has delivered to you or you can choose to alter that present (you obviously cannot change the past except as a historian working for the winning side) . It is not inevitable that you must accept what history has ladled into your bowl.
Linda has empathised and urged you not to despair. I too urge you in the same fashion. To which I might add that you should do only what you can but do not wear blinkers when looking for what is possible, because everything and anything is possible. I do not know the source of you angst or despair but point out that the US and much of the world is being steamrolled over by big money (the oligarchs) and that that need not be so. If that is the source I would urge you to look at other posts in thinqon. I will add a few suggestions. But thinqon is in part at least, populated by beings like you who are looking for answer to how can we do it better. You may find yourself in good company.
http://www.thinqon.com/topic/wikileaks_a_hero_or_just
http://www.thinqon.com/topic/libertarianism_without
http://www.thinqon.com/topic/what_should_we_expect
http://www.thinqon.com/topic/would_women_make_a_better
I'm sure there are other topics others could suggest.
In a speech 'Welcome to the Plutocracy', Bill Moyers says that Howard Zim's view of democracy is that it ' was one big public fight and everyone should plunge into it. That’s the only way, he said, for everyday folks to get justice – by fighting for it'. If you want to put that into context, visit:
http://www.truth-out.org/bill-moyers-money-fights-hard-and-it-fights-dirty64766
It should inspire.