Difficult things aren't easy, but they're worth it.

All difficult things have their origin in that which is easy, and great things in that which is small.

Writing's still the most difficult job I've ever had - but it's worth it.

Have patience. All things are difficult before they become easy.

You may get skinned knees and elbows, but it's worth it if you score a spectacular goal.

I need therapy after writing. It's like leaking blood from a stone. It's brutally difficult but worth it.