It is a popular
lyric to a song, but sometime used i phrases or as comparisons to things. it's basically taking
one step back. and it means, making
progress towards something but making less progress rather than more, if that makes sense.
"one step forward < two steps back"
I was trying to
finish my
math homework, and i did the
beginning, but going to that party before finishing was one step forward and two steps back.