Perhaps the thought of going to hell doesn't alarm you, because you don't believe in it. That may be your belief, but if hell exists, your lack of belief won't make it go away. Standing on a freeway and saying, "I don't believe in trucks" won't make the 18-wheeler disappear.
The entire world may not change. The entire world cannot change. The entire world even will not change. But your tiny world you can and will change forever at this very moment with the help of your confidence-heart. Yours will be the unparalleled victory.