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Mark Berber, a Toronto psychiatrist, uses happiness therapy in his 30-year practice to rally patients with often debilitating mental-health disorders ranging from anxiety to severe depression, bipolar disorder and schizophrenia.
March 20 is the United Nations' second-annual International Day of Happiness, established to promote the theory that cheerfulness improves mental and physical wellness and also fosters economic prosperity.
Berber, who is based at Ontario's Markham Stouffville Hospital, says happiness comes down to nurturing a subjective sense of well-being.
Here are his tips to happiness: