How can hallucination and paranoia be treated?

I feel like I may need to visit a psychiatric hospital. I m seeing things and hearing things that aren t there. Paranoia is out the roof. I can t sleep to save my life. Once I do fall asleep I feel exhausted when I wake up. I m angry most of the time. I have flash backs. I cut myself. I have suicidal thoughts. My family and friends know this, but I m scared. Scared for myself. I don t know what to do and I m freaking out. Please help me. What should I do? Who do I turn to?