a man without a smiling face must not open a shop

a man without a smiling face must not open a shop

proverb A pleasant, friendly demeanor helps one to succeed in business. A: "That guy is so miserable, I bet he'll be out of business in a month." B: "Yeah, like they say, a man without a smiling face must not open a shop."
See also: face, man, must, not, open, shop, smile, without
Farlex Dictionary of Idioms.
See also:
  • punctuality is the soul of business
  • like nobody’s business
  • like nobody's business
  • business woman
  • go about (one's) business
  • go about your business
  • open for business
  • How's business?
  • Keep your shop and your shop will keep you
  • make it one's business