I should clarify: those feelings come because when I'm deeply engrossed in these songs, I am in touch with *me in 1982* or whatever. I see the plans and dreams of what I intended to accomplish, and--no plan survives contact with the real world--the contrast with the actual. But a few minutes or hours later, I'm fine again.
I discussed this in tonight's daily call with #sonTwo and it occurred to me that without access to my internal transcript, readers would not understand the process.