Worry is fear of an uncertain future outcome that could be troubling.

Concern is recognizing an uncertain future outcome that could be troubling.

Worry is emotional whereas concern is not.

I can be concerned about my brother becoming ill without being emotionally affected by it.

But if I am worried, then I experience fear and am adversely affected.

Therefore, not being worried doesn’t mean you become an unemotional robot. Instead, you’ll be concerned and feel compassion.

Worry transmutes into concern when understanding is attained. Start by understanding fear: