Analyse it, dissect it, weigh it, examine it from every standpoint, judge it by the one test that everything in life must, and ought to submit to, viz.: its usefulness.

What use is it to you?
How necessary to your existence?
How helpful is it in solving the problems that confront you; how far does it aid you in their solution, wherein does it remove the obstacles before your pathway.

Find out how much it strengthens, invigorates, inspires you.
Ask yourself how much it encourages, enheartens, emboldens you.

Put down on paper every slightest item of good, or help, or inspiration it is to you, and on the other hand, the harm, the discouragement, the evil, the fears it brings to you, and then strike a balance.
I can tell you beforehand that after ten years' study--if so long were necessary--you will fail to find one good thing in favor of worry, and that every item you will enumerate will be against it.

Hence, why worry?
Quit it! Worry, like all evils, feeds on itself, and grows greater by its own exercise.