Impossible is Nothing

So some nights i wake up and think with dead certainty that if i go to law school, it will be OMG THE BIGGEST MISTAKE OF MY LIFE. And some mornings i open my eyes and immediately think that if i turn down the law school opportunity, it will be OMG THE BIGGEST MISTAKE OF MY LIFE. These two options are diametrically opposed and therefore cannot both be true. Right? So i have at least a 50% chance* of not making OMG THE BIGGEST MISTAKE OF MY LIFE. Haha. Just kidding. I know it'll come out okay in the end. I think. I'm sure. *statisticians need not tell me what's wrong with this thinking. thanks. math = not my forte. p.s. I'm not sure why this post is titled "impossible is nothing," except that the combination of lofty intent and words that do-not-mean-what-you-think-they-mean seems to echo my own poorly-structured argument about 50% chances. I.e., it sounds OK if you gloss over it but if you read it closely, it doesn't make sense.