Every dog has his day.

Someone who is overlooked or unsuccessful now may still have a chance to succeed later. Present circumstances need not define a person's prospects forever.

The saying can also temper pride in those currently doing well: success may shift, giving others their moment to prosper or receive recognition.

Use it to encourage someone after a setback or to suggest that a person who has been overlooked may yet succeed. It can also be a gentle reminder not to assume that present success will last indefinitely.