I am sorry that you are experiencing so much difficulty. It is difficult to feel ungrounded and unsure.
The most efficient way to deal with this problem is to continue to relay your symptoms to your psychiatrist. If you feel that your psychiatrist is not helpful, then consult other mental health professionals. If you are overwhelmed or feel that you might harm yourself or others, then it is important to go to a hospital immediately. A hospital stay may help you to stabilize.
If this situation is not an emergency, then consider other treatment options such as psychotherapy. You mentioned that you have a psychiatrist but did not say whether or not you are involved in other types of psychological treatment. Individual counseling might be helpful. It could assist you in analyzing your thoughts and help you to become more grounded. Group therapy could also be helpful. With group therapy, you would have the advantage of interacting with a number of individuals who can provide support and guidance.
I would also recommend inquiring about a sleep study. A sleep study might uncover the reason for your insomnia.
It is not easy for me to determine “what’s wrong.” I only have a limited amount of information. Your lack of sleep is likely contributing to your psychiatric symptoms. Insufficient sleep can lead to irritability and moodiness. In extreme cases sleep deprivation can cause paranoia, delusions and hallucinations. You might greatly benefit from a sleep medication. Please discuss this possibility with your psychiatrist. Lunesta and Ambien are two popular medications. They might provide relief.
I hope you’re able to get the help that you desire. Please take care. I wish you the best.