How to be less of a miserable person?

Anyone else hate how depression just makes you so apathetic that you turn into a sarcastic asshole with everyone? Or maybe that's just who I am. Regardless, I'm hyper aware of my bad attitude but can't seem to stop. I spend so much time in my own head surrounded by negative thoughts that I can't even separate myself from them and pretend to be a goof like I did in the past. My self-deprecating humor has turned into just self-deprecation. I hate how the people I used to be close to actively avoid me, but I don't blame them honestly. I am not someone I would want to be around. It hurts to recognize that you are toxic and I just don't know what else to try.