No. Not at all. And I have proof.
I have this friend I call just about daily after school(3:00+), and a few weeks ago(When I was still in school) I couldn't talk to her for a week. Now I'm thinking about her a bit less and tune into the conversations going on around me in school. I knew that my peers were making extremely offensive jokes, but now that I have no choice but to listen, I was utterly ******. Now, I don't cut my nails often, so they are literally my main weapons. I call them my claws. I literally began to dig my nails into some of my peers' arms and scratch them like a cat when they got near me. I literally spat at one of them once. I now refer to myself as "feral" when talking about myself when I do that, seeing as I act like an aggressive cat. I mean, I always act like a cat, but when I'm annoyed, I almost don't hold back. I am a hazard to people who are rude. Not rude, disgusting. Those disgusting people that thinks it is OKAY or even FUNNY to make fun of minority groups. AS A [REDACTED] JOKE. I don't get it! Please, explain to me why minority groups even have to be a THING. Why people call each other "gay" and "trans" as an INSULT or JOKE. How?! Why!? I will never understand!
I also casually joke about death and things most people would find horrifying, and I find it funny... So I guess that's another point.
Sometimes I have this urge to scratch or bite at anything around me, as if I need to escape something and this is the only way to get out. I even popped off one of my brackets(the thing that's attached with glue to my teeth aka braces) because of this once. It was in the two weeks I was 'feral', though, so that may explain it.
But, wait, there's more! I randomly get sad sometimes, and occasionally think "I wish I was home" or something along those lines when I'm laying in bed. I also can randomly get really giggly and cheerful, which is ironically when I make the most morbid jokes, making it seem like I'm insane or something. If course, I'm not denying it, but still, I creep myself out sometimes.
Would you call this mentally stable because I wouldn't.