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How to deal with life being unfair
Get to the root of the problem.
In order to deal with life being unfair, you first must get to the core of the bad apple you've been tossed. Ask yourself what, exactly, is the root cause of this particular unfairness.
Sometimes the cause will be something within your control, such as getting into a car accident because you were texting and driving. Other times the root cause is completely out of your control, such as being sexually assaulted or diagnosed with a life-threatening medical condition.