be able to focus on the positives, you have to keep your mind calm and clear. From a cognitive science point of view, a calm and clear mind is the one which is the most effective, it's the one that takes in most information, which understands most deeply and can respond most nimbly and flexibly. That calm, clear state allows you to stay positive even when people around you and even your own impulse is to panic and be very anxious and be very worried. One of the things that comes with managing attention well is the ability to control distressing situations well so that you can retain that calm and focus