Your reality is defined by your beliefs, your beliefs are defined by your perceptions and your perceptions are defined by your definitions. You make the choice to define it in your reality as negative and in your reality negative it is.

It's really that simple.

You could just as easily define it as something to gain from. Not "Oh, such a negative experience" but "Hey, I can learn something here." Reflections and echoes. So try it sometime, but ask yourself "What are the reasons?" Specifically that question, because that's introspection.