I know that ば is to indicate that "if A happens, B will happen too".
So, today, I've listened a song and it says:
I gotta believe
I don't wanna know 下手な真実なら
I don't wanna know 知らないくらいがいいのに
Why? Why? Why? Why?
気づけば I came too far.
(The mixture of Japanese and English is in the original.) I can't translate the last verse. I don't think that it means "If I realize". So I would like to know what is the meaning of this "気づけば".