This. This is what feelings of guilt do to you. You rob yourself of happiness, any moment is fleeting and you're left behind to deal with the mess you are. Every sound is noise. Every silence is blankness.
Through his perspective, we see literal cross marks on people's faces and their conversations are often muffled or random. This movie brings out our uncomfortable feelings, and reminds us of bad memories of our own life. And then, it gives you hope. It gives you room for introspection to remind yourself of the people you've hurt, and the people who have hurt you. How we're all complicit in this cycle.
If only you knew, you can learn to make peace with it. If only you knew, that people will love you if you allow them to.
“When there is a storm, and you stand in front of a tree, if you look at it’s branches, you swear it will fall, But if you watch the trunk, you will see it’s stability.” - The Revenant 2015