Skill Kills

Many have this habit or rather skill of analyzing anything and everything. They read too much into words and builds a sequence of situations without having a clue of getting trapped in it. I wonder where does the so called skill is developed from. I have a friend who was quite like this, he used to read too much into matters and never used to get out of them untroubled. Why can't they accept matters practically rather than digging into it, why can't they see the world in a relaxed way rather than appraising it from top to bottom. Oh come on, There is so much to see and so much to hear and we have a life time to THINK and ANALYZE. I know "Idle brain is worth nothing", but thinking too much is injurious to health.