Harvey Mackay Quote

Never underestimate the power of a simple thank-you note... or a note of congratulations.


Dig Your Well Before You're Thirsty (1997)


Never underestimate the power of a simple thank-you note... or a note of congratulations.

Never underestimate the power of a simple thank-you note... or a note of congratulations.

Never underestimate the power of a simple thank-you note... or a note of congratulations.

Never underestimate the power of a simple thank-you note... or a note of congratulations.