Well said.
I can relate. Probably everyone reading this thread can relate.
Also well said.
As far as I'm aware, the best solution to that sentiment is from Duke Ellington. I have seen several variations of his quote, but it's essentially, "Don't give me more time. I don't need time. What I need is a deadline."
I have written around 40 songs in my life, and at most, there were 5 of those that were completed without any kind of a deadline.
All the rest went something very close to this: I had three or four song ideas. Some more realized than others. I looked at my calendar and chose a day off that was several weeks in the future. I booked a studio, hired an engineer, a drummer, and a bass player. Sometimes also a keys player. Then I *had* to finish them. At least, I had to know the tempo and the structure of the song. I had three weeks to sit at the kitchen table work out song structure, sing the melody to myself a thousand times, decide that the ABCB rhyme scheme that I'd spent 20 agonizing hours working on... these lyrics really would work better with the chord changes if it were AABB. I started over.
The kitchen table and the acoustic guitar were essential. I'm a night owl by nature, so this usually happened between 10pm and 2 am in the weeks before the session.
I made Nashville-style chord charts for everyone. I used the metronome on my laptop or cell phone to make scratch tracks. Often that is very revealing (e.g. "Shit, the way I've mapped this out, it's a six and a half minute song."). Most of the hired players are *really* going to want to hear the vocal melody when they do the tracking. So if the lyrics weren't finished when I made scratch tracks, I had to sing the same lyrics in every verse. If the lyrics were non-existent, I'd sing "Doo doo doo" or "La la la." I cut a disco song last year where the lyrics were eluding me ahead of the tracking date, so for the scratch tracks, I sang the words to "Life During Wartime" to my own melody... which turned out to be really fun and energizing exercise (I even felt some remorse when my disco tune no longer had a falsetto, "Heard about Houston, heard about Detroit, Heard about Pittsburgh, PA." It was cool.).
Anyway, NONE of this comes easily to me. I am meticulous and reserved by nature, and I am embarrassed to sing or play anything in front of other people unless I think it's *already* pretty good, so scat singing nonsense into a microphone is a truly horrifying feeling. As far as level of discomfort, it feels like recording myself performing something I've written in big, complex, and dramatic Spanish (which I definitely cannot actually do) and then playing that recording for a room full of highly accomplished Spanish writers.
I usually don't cut lyrics on the day of the full-band tracking. So that requires ANOTHER DEADLINE where I book an engineer two weeks from now. Now I have to finish the lyrics. Back to the kitchen table.
Anyway, that's what I meant when I said "discipline and grit."
Sorry for such a long post.