To quote  Milton from "Paradise Lost"  , " Mind is a place  of  its  own,  it  can make heaven out of hell  and  hell out of  heaven". How  true, when I juxtapose my life against this  immortal line. I mean, there are  days when I wake up   with absolutely nothing in my mind  but spite, frustration  and disgust for every living soul on this damn earth, and invariably I end up even more frustrated and desolate  by the  end of the day . Its uncanny how  the  same people can look  absolute  angels one day  and  then take  up the role of devils  on another  "bad hair" day, so to say. It intrigues me no end that  the world doesn't change around me   physically  but the biochemical reactions  taking place in my brain make sure that the intrinsic patterns of the external world manifest themselves in different manners over a week or a month. So many different emotions splurge the mind inspite of undergoing predominantly routine demonstrations day in day out.

      There are innumerable self help books out  there which cry hoarse on this very concept ,namely " Mind over Matter " , emphasizing the point that everything can change if only we have control over our thoughts. Winston Churchill , once famously said.... " the  price of true  greatness is that you need to have control over each of your thoughts.... " and how true that actually is , except for the fact that u can not fully control ur thoughts for an hour leave alone a full day , once ur  day  gets cranking .Truth be told, there are so many distractions, so many bottlenecks in our day to day work and with our growing propensity to fill our repsective lives with maximum of everything, thoughts can run amock in our minds and we are all slaves of our mind rather than  the other way around. It is a price too great to pay for , since to become great u may possibly have to renounce all the worldly desires and let go of the  materialistic success and not abide by the laws of modern society which effectively push everyone to the limit.

       It can be likened to an IVP  in the integral calculus. An IVP is a differential equation whose solution is dependent on the initial conditions ascribed to the variables of the problem. Which particular emotion dominates the brain i.e what reactions I tend to come up with during the course of the day depends on the initial condition of the "Initial Value Problem "  which in this particular case would be the feelings I want to allow in the brain at the very outset of the day. So, if I wake up with ANGER ( variable x ) = 0 and HAPPY ( variable y ) = 100 ,  the ultimate solution  i.e  my  mood during the day is likely to be inclined towards the happy  part rather than the angry part.