You're a funny man, Les!
You sure had some 'creative juices' flowing in that post - fantastic - I couldn't stop grinning - you describe exactly the excitement (and pride!) of the 'creative moment' ...and then how reality re-assserts itself (for most of us!) later - I assume you are having a good day! Excellent advice too. We sure are lucky to have you on this site.
While reading it I was thinking about how I start to write lines/thoughts/lyrics and realised that because I write on paper (not keyboard) initially, you really can just 'get it all down' and add ideas, words, anything as they occur to you. You can discard things or re-arrange them later, but because you just add it/get it down, you don't lose it like you would if you were typing and replacing as you go.
I'd be interested to know how other people here start off with a lyric and whether you think the method of recording your ideas makes a difference.
One good thing about music is that when it hits you, you feel no pain - Bob Marley