My name is Seth, and I'm 21 years old.

I guess I should start at the beginning. I got kicked out of high school for missing too much class. This, for the most part, was due to my skipping because I had started getting extreme anxiety. If I was late, or sometimes just at random, I'd start getting anxious and uncomfortable, so most of the time I'd just go out to my car and leave.
After getting kicked out, I was enrolled at an alternative school nearby, but that didn't last very long either. The principal talked to me and my mom, and we figured I'd be better off trying to get my GED. (since I was alone and didn't have any friends or anything)
This accumulated in me signing up to take a test to see which subjects I still needed to take classes on before I could take the official test, however when test day came around I got really anxious, had a panic attack, and haven't been back since. That was about 2 years ago.

Since then, I've lived with my great aunt and uncle. (my mom's aunt and her husband) I don't have any friends, and I don't really hang out with my family or interact with anyone all that much. There are days when I can barely make it out of my room, let alone go outside.
Recently, my mom got me an appointment with a psychologist. He diagnosed me as being schizo, or something close to that. I don't remember the exact diagnosis, but it was either schizo, or schizo tendencies.

For those who don't know, schizophrenia is abnormal social behavior and not really knowing what's real. Symptoms are false beliefs, unclear or confused thinking, auditory hallucinations, reduced social engagement and emotional expression, and lack of motivation.

I'm just... I'm at this point where I'm tired of this. I'm tired of being unmotivated, and not being able to click with and talk to people around me. If it's family, it's easy, but if it's anyone else, it's like my brain and my mouth are separated. I have to think everything out and force myself to say it or I won't say anything.

I'm also tired of not having any drive or motivation. My two younger sisters (one is turning 20 this year, the other is 15) both have jobs. They both got jobs around 13, and I didn't understand why they wanted that. I still don't. I don't understand how they can want that, and how it can make them happy, but for me it's the worst thing in the world.
I have no drive to do anything with my life. Not get married, not get a job, not go to college.
The only thing that brought me here, was the overwhelming feeling of being a failure. I'm 21 years old and while I have had jobs (working for my dad, although it was always forced) I've never had a job where I was actually employed by someone who wasn't family. I don't have a high school degree or a GED, and I don't have any friends or really anyone to talk to.

What the heck should I do? I don't know if we can afford for me to get a therapist, but at this point I don't think anything else will even help.
I hope there are a few people who knows what this is like, and don't just yell at me, thinking that I'm just lazy and there's nothing else to it.

Thank you to anyone and everyone that takes the time to read this and leave their feedback, it is much appreciated.