A research indicated that nearly 7 in 10 Americans dread the week ahead on Sundays, with the number climbing among young people.
67% of people suffer the "Sunday scaries," according to a poll of 4,000 people.
Work anxieties, lack of sleep, and looming to-do lists produce "Sunday scaries," say sufferers.
NHS trusts have warned that personnel shortages will make it difficult to meet increased demand for mental health services.
Therese Coffey said, "My focus is on making sure people can obtain care when they need it, including for their mental health."
The campaign's website helps people construct a free "mind plan" with recommendations on anxiety, money problems, and kid mental health.