Letting Go Lyrics

The hardest thing to do
i have to let it go
i gave it all i had
i gave it my best shot

but now time has come, i have to let it go Dead Stop - Letting Go - http://motolyrics.com/dead-stop/letting-go-lyrics.html
but do i have to? do we have to?

why can't we move on?
move on with what we do?
i have to let it got, i have to let it go