There are people who do many good things, but with pessimism—because to them the world is an inherently bad place. Since their good deeds have no life to them, who knows how long they can keep it up?
We must know that this world is not a dark, sinister jungle, but a garden. And not just any garden, but G‑d’s own pleasure garden, full of beauty, wonderful fruits and fragrances, a place where G‑d desires to be with all His essence.
If the taste to us is bitter, it is only because we must first peel away the outer shell to find the fruit inside.

I still find it difficult to connect the concept of ‘a beautiful garden’ with the Shoah. I’ve been struggling with this my entire life.
You just have to imagine yourself to be in a jungle, where nature is beautiful and among the animals there are predators and there are peaceful animals, that’s how life of human beings is as well and we mustn’t focus on the predators 24/7, even if we are aware of them.