Writing for a living: a joy or a chore?

From The Guardian

Colm Tóibín claims he does not enjoy writing very much. Do other authors share his view?

Hari Kunzru: "I get great pleasure from writing, but not always, or even usually. Writing a novel is largely an exercise in psychological discipline – trying to balance your project on your chin while negotiating a minefield of depression and freak-out.."