Everyone has an ambition in his life; some of us want to become doctor, engineer etc and some want to get good marks in exams.
If our goals appear in our mind which doesn’t let us sleep is known as dream.
What we think about achieving the goal is reflected in our dream.
It is our dream which drives us to convert it into a reality.
In other cases a dream originates in something that the dreamer saw or we thinking about just before sleep came upon him.
Coleridge once fell asleep in his chair after reading how Kubla Khan ordered a palace to be made.The latter mistake forms the subject of a celebrated Spanish play called Life a Dream, and of an amusing story in the Arabian Nights, in which a poor man is for a jest treated as a mighty monarch, and it is contrived that he should afterwards think that all the honourable treatment he had actually received was merely a vivid dream.Sometimes even after waking, we may be doubtful whether our dream was a reality or not, especially if we happen to fall asleep in our chair and do not remember the circumstance of having fallen to sleep.Dreams are very different from waking life, but it is extremely difficult clearly to define in what the difference consists.When we are dreaming, we are nearly always convinced that we are awake, and in some cases real experiences have been mistaken for dreams.There are instances of mathematicians solving in their sleep problems that they had vainly puzzled over when awake.All the fact that we have been considering are so various that they chiefly illustrate the extreme difficulty of making any general statement about dreams.As a rule, in our sleep all kinds of events seem to happen which in our waking hours we should know to be impossible.In our dreams we see and converse with friends who are at the other side of the world or have been long dead.The idea worked upon his imagination, and the consequence was that he composed a fine poem in his sleep.When he woke up, he remembered perfectly the lines that had presented themselves to his mind in the form of a dream, and he immediately began to write them down.