to write a song, you just have to sit down and do it

From an interview with Nick Cave at CHARTattack:

Has it gotten easier or harder to write after so many years?
It just depends. It doesn't get harder. It doesn't get easier, either. The process is to just sit down and write the songs. There's no other process.

Truth of the matter is that to write a song, you just have to sit down and do it. They don't magically appear. I don't wake up after a lost weekend and find out I've written an album. I just sit down and write the stuff. Always have. I assume most people have to do that. I don't know what other musicians do. But I don't see how anybody else does it.