What I can hear from one of the chorus's lyrics, they're something along the lines of
"Look, remember, the days you feel down and want to give up, yesterday somewhere, someone didn't give up for tomorrow. I'll keep holding on to that hand very, very firmly, remember that"
Okay that's such a crappy and incorrect translation but my point is, this song was probably inspired very much by that one blog post of hers where she said something like "The today that you want to give up is the tomorrow that someone fought to have" etc. Really touching
