Stiffening Your Mental Backbone.

Henry Addington Bayley Bruce (1874–1959) was an American journalist and author, born in Toronto, Canada, and educated at Upper Canada College and Trinity College, Toronto. He was for a time on the Toronto Week, then came to the United States, was employed by the American Press Association between 1897 and 1903, and afterward contributed to many periodicals, notably The Outlook. In 1916 he resigned as staff contributor to The Outlook. In 1915 he became psychological adviser to the Associated Newspapers. Addington Bruce also wrote books. His most successful work was in American history and in popularizing modern psychology and psychical research. 
He published:

The Riddle of Personality (1908)
Historic Ghosts and Ghost-Hunters (1909)
The Romance of American Expansion (1909)
Daniel Boone and the Wilderness Land (1910)
A translation of Leroy-Beaulieu's The United States in the Twentieth Century (1906; new edition, 1911)
Scientific Mental Healing (1911)
Woman in the Making of America (1912)
Adventurings in the Psychical (1914)
Sleep and Sleeplessnes (1915)
Psychology and Parenthood (1915)
The Riddle of Personality (new and revised edition, 1916)
Handicaps of Childhood (1917)
Nerve Control and how to Gain It (1918)
Self-Development (1921)

"Stiffening Your Mental Backbone", a Good Housekeeping article written by Addington Bruce.

Home Economics Archive - Bruce, H. Addington
• The Child that Sulks Good Housekeeping: January, 1917 (Volume 64, Number 1)
• Exercise Wise and Otherwise Good Housekeeping: July - August, 1920 (Volume 70, Number 6)
• The Fairy-Tale and Your Child Good Housekeeping: September, 1915 (Volume 61, Number 3)
• The Fears of Childhood Good Housekeeping: October, 1915 (Volume 61, Number 4)
• Finding Health in War Work Good Housekeeping: July, 1918 (Volume 67, Number 1)
• Hobby-Riding for Health Good Housekeeping: August, 1917 (Volume 65, Number 2)
• If Your Brain Works Poorly Good Housekeeping: February, 1920 (Volume 70, Number 2)
• In Case You Do Not Sleep Good Housekeeping: March, 1920 (Volume 70, Number 3)
• Jealousy in Children Good Housekeeping: May, 1916 (Volume 62, Number 5)
• Lazy Parent Lazy Child Good Housekeeping: April, 1929 (Volume 88, Number 4)
• Making the Most of Childhood Good Housekeeping: March, 1913 (Volume 56, Number 3)
• The Menace of the Figured Veil Good Housekeeping: September, 1913 (Volume 57, Number 3)
• Overlove, and Its Consequences Good Housekeeping: December, 1928 (Volume 87, Number 6)
• Religion and the Larger Self Good Housekeeping: January, 1916 (Volume 62, Number 1)
• Selfishness and Your Nerves Good Housekeeping: October, 1916 (Volume 63, Number 4)
• Stiffening Your Mental Backbone Good Housekeeping: April, 1920 (Volume 70, Number 4)
• The Virus of Parental Fears Good Housekeeping: February, 1929 (Volume 88, Number 2)
• When Illness Is in the Home Good Housekeeping: June, 1925 (Volume 80, Number 6)
• Who Cures, Doctor or Patient? Good Housekeeping: April, 1923 (Volume 76, Number 4)
• With God's Help Good Housekeeping: October, 1924 (Volume 79, Number 4)
• Your Home and Your Health Good Housekeeping: May, 1920 (Volume 70, Number 5)

Genieve Behrend mentioned him.
A Canadian eh!