Earlier this year I read an interview with Robert McKee, screenwriting guru. It contained this incredible quote:
The great irony of existence is that what makes life worth living does not come from the rosy side. We would all rather be lotus-eaters, but life will not allow it. The energy to live comes from the dark side. It comes from everything that makes us suffer. As we struggle against these negative powers, we're forced to live more deeply, more fully.
The most meaningful experiences in my own life were intertwined with pain and struggle.
You can read the entire interview in a PDF here. Highly recommended and highly thought-provoking. Great advice for communicating with others, too.