It sounds like you need some serious help with anxiety that strong. Maybe you should visit a psychologist or someone that you can talk to about your fears and anxiety, try to get it all off of your chest and open up to someone.

I also find that meditation greatly helps with anxiety. There are a lot of free guides out there about meditating to specifically treat anxiety and it can really help people. Just have a search on the internet and try meditating everyday for at least 3 weeks, hopefully you should notice your anxiety alleviating and if you continue it will hopefully go away.

I hope this helps, cheers