You may urge that this feeling of continuous looking forward, of aspiration, is part of life itself, and inseparable from life itself. True!
But there are degrees. A man may desire to go to Mecca. His conscience tells him that he ought to go to Mecca. He fares forth, either by the aid of Cook’s, or unassisted; he may probably never reach Mecca; he may drown before he gets to Port Said; he may perish ingloriously on the coast of the Red Sea; his desire may remain eternally frustrate. Unfulfilled aspiration may always trouble him. But he will not be tormented in the same way as the man who, desiring to reach Mecca, and harried by the desire to reach Mecca, never leaves Brixton.
-- Arnold Bennett, "How to live on 24 hours a day"
Continued:
It is something to have left Brixton. Most of us have not left Brixton. We have not even taken a cab to Ludgate Circus and inquired from Cook’s the price of a conducted tour. And our excuse to ourselves is that there are only twenty-four hours in the day.