Lyric discussion by Givemeareason 

Cover art for No More lyrics by Three Days Grace

To me, I think this song is about how he can control the smaller things in life but he can't control the bigger things in life "I can't stop the rain but I can stop the tears".

He's had enough of living in fear hence the song title "no more". He can't control the fear say if it's about a relationship or whatever, he's deciding to move. "Give me a reason to stay, coz I don't wanna live in fear".

Well that's what it is to me. Powerful song indeed.

@Givemeareason I can completely agree. Can I add to that, if I may?