A Long Walk to Water

Salva got terrified because his friend got lost and there was blood and lions around.
so his uncle kept him calm by saying "Salva, I have a gun if any lions come close I will shoot them." and that made him feel a lot calmer hearing his uncles voice.

I think that the worst element in my opinion that he has faced is probably, heat. because it drains his energy, also it makes him feel pain and hallucinate.

when Salva was just giving up, his uncle gave him really good fruit, then told him to keep walking, just to those bushes and he did that for a long time and every time he did his uncle said his full name, so it reminded him of his family.

Nothing can survive in the desert.