“Your day will go the way the corners of your mouth turn” is an inspirational saying that has been printed on many images. “Your day goes the way the corners of your mouth turn” was printed in The Morning Herald (Uniontown, PA) on May 25, 1955. “Your day will go the way the corners of your mouth turn—Jimmy Townsend, Pickens Co. Progress” was printed in the Atlanta (GA) Constitution on July 31, 1974.
 
Authorship is unknown. “Your day goes the way the corners of your mouth turn. So smile” was the caption on a Family Circus comic strip published in many newspapers on November 17, 2008.
     
 
Google Books
Physical Educator of Phi Epsilon Kappa
Volumes 10-13
1953 (This Google Books date may be incorrect.—ed.)
Pg. 93:
Your day goes the way the corners of your mouth turn.
 
25 May 1955, The Morning Herald (Uniontown, PA), pg. 19, col. 1:
LAST LINE—Your day goes the way the corners of your mouth turn.
     
16 June 1955, The Mississippi Sun (Charleston, MS), pg. 5, col. 4:
,,, after a visit to the dentist—a brave, happy boy wears a smile. (Your day goes the way the corners of your mouth turn)
 
24 January 1956, Tipton (IN) Tribune, ‘Round Town,” pg. 6, col. 6:
Today’s Tidbit
Your day goes the way the corners of your mouth turn.
 
22 February 1958, Los Angeles (CA) Times, “Church Billboard Used by Preacher: Passers-by Look Forward to ‘Stop-Light Sermons’ From the Rev. Dale H. Conrad” by Richard Mathison, pt. 1, pg. 10, col. 1:
Your day goes the way the corners of your mouth turn.
 
31 July 1974, Atlanta (GA) Constitution, Leo Aikman column, pg. 5-A, col. 2:
Your day will go the way the corners of your mouth turn—Jimmy Townsend, Pickens Co. Progress.
       
Google Books
14,000 Quips & Quotes:
For Speakers, Writers, Editors, Preachers, and Teachers
By E. C. McKenzie
Grand Rapids, MI: Baker Book House
1990, ©1980
Pg. 68:
Your day goes the way the corners of your mouth turn.
 
Google Books
Pushing the Envelope:
All The Way To The Top
By Harvey Mackay
New York, NY: Ballantine Books
1999
Pg. 327:
Your day usually goes the way the corners of your mouth turn.
 
Google Groups: rec.games.frp.dnd
The Upcoming Release of 3E… and a flashback to before 2nd?
Obrin Lightheart
7/29/00
(...)
Your day will go the way the corners of your mouth turn.
 
17 November 2008, The State (Columbia, SC), “Family Circus” comic strip by Bil Keane, pg. B6, col. 2:
“Your day goes the way the corners of your mouth turn. So smile.”
 
Google Books
The Things That Matter
By Nate Berkus
New York, NY: Spiegel & Gray
2012
Pg. 100:
She’s managed to achieve that separation through a staircase topped with block letters reading, “Your Day Will Go the Way the Corners of Your Mouth Turn,” which ushers her into a beautifully organized office.
 
Twitter
Bruce Van Horn
@BruceVH
Your day will go the way the corners of your mouth turn…. so smile!
10:24 PM - 15 Aug 2018