Well for many years I pondered a similar idea, which once in college and taking philosophy had this idea confirmed and is considered a hard idea to wrap your mind around (+10 to me for thinking it up on my own) anyway its that every action, choice, and incident influences the next, if you choose to be friends with someone its because how they acted around you and you liked their impression, that friendship effects your future, so all in all like a domino effect, even a drastic change of heart suddenly is governed by something that happened where it could be anything from I wanted to do it to bipolar disorder, which that choice will effect something later on.
So to answer your question NO you don't make you're own choices as you choices are in some form affected by the past anywhere from something that happened to you or to the action of your parents conceiving you, meaning you wouldn't have the choice today if they had not got it on that night.
MaxwellGT2000 - "Does the amount of times you beat it count towards how hardcore you are?"
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