I always thought this song was about her job, the recording business. How she's pressured to do the best she can and be this amazing thing she's expected to do these extraordinary things, but she also feels guilty and thinks that maybe she could be doing better, hence "it takes a lot to be always on form, or maybe not-all the time I've got, maybe not".
She's putting on a fight-front, talking about "then all at once, let me have it all" saying basically "I can take it, come on, throw it on me, let's go."
Edit: I guess I already commented on this one.
I always thought this song was about her job, the recording business. How she's pressured to do the best she can and be this amazing thing she's expected to do these extraordinary things, but she also feels guilty and thinks that maybe she could be doing better, hence "it takes a lot to be always on form, or maybe not-all the time I've got, maybe not". She's putting on a fight-front, talking about "then all at once, let me have it all" saying basically "I can take it, come on, throw it on me, let's go." Edit: I guess I already commented on this one.