Between happiness and fear

When one's life which was so far simple and calm begins to transform into a place where occurences with distinct behavior but contrary properties starts oscillating ,the inner conscious becomes a device which generates constant waves of fear which may look like a reflection of unknown happenings or known uncertainity...whts precisely rules our very existence and casual happenings is the known uncertainity unless the intellect takes a firm or uncertain decision to drive the life through the proper path...