After all, most writing is done away from the typewriter, away from the desk. I'd say it occurs in the quiet, silent moments, while you're walking or shaving or playing a game, or whatever, or even talking to someone you're not vitally interested in.
The only way out is the way through, just as you cannot escape from death except by dying. Being unable to write, you must examine in writing this being unable, which becomes for the present -- henceforth? -- the subject to which you are condemned.
He is a man of thirty-five, but looks fifty. He is bald, has varicose veins and wears spectacles, or would wear them if his only pair were not chronically lost. If things are normal with him, he will be suffering from malnutrition, but if he has recently had a lucky streak, he will be suffering from a hangover. At present it is half past eleven in the morning, and according to his schedule he should have started work two hours ago; but even if he had made any serious effort to start he would have been frustrated by the almost continuous ringing of the telephone bell, the yells of the baby, the rattle of an electric drill out in the street, and the heavy boots of his creditors clumping up the stairs. The most recent interruption was the arrival of the second post, which brought him two circulars and an income tax demand printed in red. Needless to say this person is a writer.
Writing is simple. First you have to make sure you have plenty of paper... sharp pencils... typewriter ribbon. Then put your belly up to your desk... roll a sheet of paper into the typewriter... and stare at it until beads of blood appear on your forehead.
Most bad books get that way because their authors are engaged in trying to justify themselves. If a vain author is an alcoholic, then the most sympathetically portrayed character in his book will be an alcoholic. This sort of thing is very boring for outsiders.
I was an only child. I lost both my parents. By the time I was twenty I was bald. I'm homosexual. In the way of circumstances and background to transcend I had everything an artist could possibly want. It was practically a blueprint. I was programmed to be a novelist or a playwright. But I'm not.