Worry

Death was walking toward a city one morning and a man asked, "What are you going to do?"
"I'm going to take 100 people." Death replied.
"That's horrible" the man said.
"That's the way it is." Death said. "That's what I do."
The man hurried to warn everyone he could about Death's plan.
As evening fell, he met Death again. "You told me you were going to take 100 people," the man said, "Why did 1,000 die?"
"I kept my word" Death responded. "I only took 100 people. Worry took the other ones."

Worry is, and always will be, a fatal disease, for its beginning signals the end of faith. Worry intrudes on God's compassionate ability to provide & protect us. When we allow our problems to overshadow God's promises, we unknowingly, doom ourselves to defeat.
That was never part of God's eternal plans. Release the regrets of yesterday and refuse the fears of tomorrow.
Although the time factor is fearful to everyone, fear personified is afraid of the Supreme Lord, who is therefore known as abhaya, fearless. Taking shelter of the Supreme Lord brings actual fearlessness & freedom from all worries.

~ Srimad-Bhagavatam 6.9.21