Here's a pointer culled from the careers of men who have attained notable success: Don't sit in your office during the hours prospects can be seen. Do your office work before or after the hours during which possible customers can be reached. This may mean adding an hour or two quite often to your day's work; but in times like this particularly, the securing of a satisfactory amount of business through the expenditure of an extra hour or two a day is not an unreasonable price to pay.