One has to understand that THINKING and WORRYING are polar opposites, though functioning from same source MIND. While THINKING, is a life-affirmative phenomenon which promotes positivity, hope and motivates the soul to reach higher sphere of life. WORRYING, solely makes one more vulnerable to restlessness & depression driving into life-negative state.
Of all the things in the world, I'm particularly amazed at, is the conviction with which the MIND, endorses an Idea, which is phenomenal, as it differentiates the Genius from Mediocre, or not to forget the human stupidity in particular!