what is the thing makes u feel like fear? O_o"

Do 당신 mean what am I afraid of?

Well I'm terrified of spiders and clowns. :p

the only thing to fear is fear itself

I get scared when I think that maybe there's no hope left, when I think that maybe the human race will destroy itself, 또는 that things won't ever get any better, 또는 that the wounds won't stop bleeding.