Can anyone help me with this song I wrote?

Ok, so I'm 15 and I'm an aspiring songwriter and I just wrote this one
song called "Listen To The Rain" and it means alot to me. It's pretty
much about a friend who's going through a hard time and is sad and
it's just a "everything will be ok" song. But I'm missing an important
line from the song and maybe you can add that line... Here's the
chorus...

"Listen To The Rain
As it is pouring down on you
Listen To The Rain
(Insert line here)
It is all a deep mystery
That you think you'll never find
But you will someday
Just Listen To The Rain"

So there it is. Can you help me add that line at line 4 where i put
"Insert line here" in parenthesis at? This could be my best one yet
and I want it to be perfect so I'd appreciate it if someone would
help. Thanks :)