I feel vaguely superior for understanding the tags to this one.
That’s not self-loathing you’re thinking in there. Your internal monologue is made to recite cues from its models of various aspects of your social environment. That’s some other asshole telling you you’re a piece of shit. Tell it to go fuck itself.
Always remember that your conscious/linguistic mind evolved to process your social environment, not to understand objective reality. Our instincts were already there to handle survival a billion years before the human ego, and formal logic is a sub-section of the social mind that a couple people just happened to have tuned properly; Your thoughts at large are a complex system of delusions tailored to your culture.
Don’t let their lies ruin you. You don’t even need to give them sisyphean counter-arguments. They’re not waiting to be answered; They’re cues for how you think certain other people might think. Let the spirits tear the flesh from their bones.