Motivation - what is it all about

Motivation.... you can call it a pseudo force which will force you to do anything, from small to big
job, possible to impossible ones, small scale to large scale ............. simply anything you ever wanted to do.
......sometimes, some or the other day you face both sides of life as there are two faces of a coin i.e. one side you don't care much about you, things automatically fall before you and you are happy that things are going fine,, all right .......... but on the other hand after much exertion, working laboriously for hours, things are not going your way, you tend to curse own self and probably you could develop "inferiority complex" among your friends. Its a bad state of your mind, well it comes to every body but its departure depends somewhat on you...... according to me (though I am also not sure).
Recently I was also trapped in this, u can call it a "chakravyuh" I was blaming myself all the time for not doing work cautiously or so. I realized that I am doing my homework nicely than others(mostly) but the end results were shocking (at least for me), output is far low than input.......... After having discussion with own self and getting some motivation from some movie I have decided that Its just a state of mind and nothing more, I will now change my way of perceiving things and hope to recover soon!!!
You can say I am motivated to work again............ that's the moral; that don't get unmotivated easily and if such situation occurs try to just chill out and give a deep thought to the problem.
Well I am also giving this kind of 'theory' a try, let's see what happens..............