Matter over mind
If you don't mind, it wouldn't matter and if it doesn't matter, you wouldn't mind. Everything works with this principle of matter over mind, whatever we are mindful of signifies how much relevance it is to us and vice versa. People over time had used this principle positively in dealing with negative vibes, they seem to have a different perspective about negative events by not minding it effect while focusing on the positive ones.
The reason why we are offended, disturbed, angered and affected by so many things around us is because we mind. If we fail to mind, it wouldn't matter, it will only matter to us if we mind what's happening. Two people trapped in a traffic may react differently, one may possibly be affected by the traffic jam while the other is neutral about it. This is because, one of the people have learned not to mind the effect of the traffic thereby finding other means to remain happy.
If we could take our eyes off negative vibes, then we will realize not a lot of things actually matters. It's parasitic to us because we mind, not because it actually has such effect, that's the reason someone could succeed where another failed. The world is full with troubling event, you hear of war, you encounter failure, betrayal and disappointment, citizens become paralyzed of their freedom, etc. If we don't learn to give little or no priorities to the mentioned, it begins to torment our mental and physical health.
Its a principle of matter over mind. To save yourself emotional breakdown, or some psychological effects, learn to look at things in a different perspective, if we don't mind, it wouldn't matter.