Search For The Full Expression of Yourself by joseph Conrad

You must squeeze out of yourself every sensation, every thought, every image,-
mercilessly, without reserve and without remorse: you must search the darkest
corners of your heart, the most remote recesses of your brain,-
you must search them for the image, for the glamour, for the right expression.

And you must do it sincerely, at any cost: you must do it so that at the end
of your day's work you should feel exhausted, emptied of every sensation and
every thought, with a blank mind and an aching heart, with the notion that
there is nothing,-nothing left in you.
Joseph Conrad