Schizophrenia is just sad

I was diagnosed with schizophrenia, and, being 21, I don’t know how to live with it.

I’m neither delusional nor violent. My doctor says I’m at an early stage of it. It makes me sad and hopeless about my future prospects. I understand that in some rare situations people with my diagnosis can have really dangerous psychosis and become aggressive, but my doctor says I won’t likely ever be like that. I’ve developed a second personality, unknown to myself, and have apparently lived with it for more than half a year. None of my friends noticed! I don't feel like sharing my life's story, I’ll only mention that my uncle also had schizophrenia (he passed away, but for reasons completely unrelated to his illness). He was never married and lived alone all his life. It's depressing that, no matter what I do, I won’t be able to get close to people because they will run away the second they think I’m mentally unstable. I feel worthless and betrayed. I don’t believe in miracles anymore.