A lot of people here can probably relate to some
of the symptoms you're experiencing. One of the things you can do is to just focus on being in the present. When you feel yourself getting anxious, etc. try focusing on the here and now. Take some deep breaths. You're not alone in this.
Also don't worry that you've caused some permanent damage or something. That's just the anxiety talking, and it will only make it worse.
You can also try doing activities you enjoy to help calm you down. Hope this helps. Keep posting