Long ago in a songwriters workshop on Redcar Pier, Vin Garbutt explained how (something like this) a good song idea would come along now and then. The other guy insisted that if you're really a songwriter you get up every day and write a song. He has written lots of songs but no more good ones than Vin.

A singer-songwriter who sings ONLY his own songs wears heavy on me. Far better he sings only his good ones along with good ones from the pens of others and of course anon.