Most often, difficulty is the very thing that creates value.
... It is whatever makes your job difficult that makes it worth someone paying you to do.
... The wins we end up most proud of are the ones for which we had to fight the hardest.
... It is in our toughest times that we have to find the very best in ourselves.
What is the point of a life without difficulty? We should seek out difficulty, to stretch ourselves and grow. And when difficulty finds us, often in forms we would never choose, all we can do is embrace it, be grateful for it (however illogical as it may seem) and be made stronger by it - because it is happening anyway.
I am reminding myself of this lesson while life seems easy. So that it will be imprinted on my being for when I need it :)