“Your attitude affects everyone around you. Attitude is contagious, and a positive attitude can make the difference between a task completed with excellence and one done with shoddy workmanship.”
Don Soderquist “ Live Learn Lead to Make a Difference https://books.google.com/books?id=s0q7mZf9oDkC&lpg=pg=PP1&dq=Don%20Soderquist&pg=PP1#v=onepage&q&f=false, Thomas Nelson, April 2006 p. 58.
On Doing Things Right
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Don Soderquist 54
1934–2016Related quotes

“A positive attitude means all the difference in the world.”

“Excellence is not an exception, it is a prevailing attitude.”
This evokes Will Durant's famous summation of Aristotle: "Excellence then is not an act, but a habit."
2000s, The Powell Principles (2003)
Context: If you are going to achieve excellence in big things, you develop the habit in little matters. Excellence is not an exception, it is a prevailing attitude.

“A healthy attitude is contagious but don't wait to catch it from others. Be a carrier.”

Go Rin No Sho (1645), The Water Book

“Attitude is a little thing that makes a big difference.”

“Japanese attitudes toward work seem to be critically different from American attitudes.”
Source: Made in Japan (1986), p. 184.