Assuming this is a song lyric (otherwise this question would have turned up in a different thread, surely?) The only song I have heard with this line is: Steven Curtis Chapman - "Saviour"

I think its called depression.

you need Peace. Once you achieve peace in substantial amounts, it won't be so easy to become scared or angry.

Not everyone is seeking something. But those who are, even if they seem to be seeking different things, are really seeking different forms of the same thing: wholeness. Wholeness is like the ultimate shape-shifter: it can look like whatever you think you're missing. For some people, it looks like love, for others, it looks like respect, for others it looks like self-worth, for others it looks like money, for others it looks like world peace. The common elements in seeking are always these: (a) the belief that something essential is missing (b) an idea of what that thing is (c) a chronic and endless quest for that missing thing which results in chronic and endless longing or frustration. Seeking is just not satisfying. No amount of finding fragments of what you're seeking ever adds up to being satisfied -- gratifying, yes... but not satisfying. The only way to finally end the search is to wake up: to realize that the search itself is based on a delusion -- the delusion that something is missing! So the wise men always advise people go give up the search and study themselves: therein lies the source of the need for searching, and therein lies the resolution of that need. If you're already whole, you don't need to go looking for anything. So what's the song?

Christ solved that longing for me and many others through out history. The emptiness inside you can only be filled by the one who Created you. Seeking peace any other way only gives a false sense of peace at best, that deep down inside you know isn't real.