One thing that I find that helps when dealing with the depersonalization issue is to ground myself by stating the obvious out loud. My name, what I'm wearing, where I live, different things like that. It tends to put you more in the moment and calms your breathing so you can try to relax.
well i was going to comment but after reading seanerr comment there aint alot to add it is well said and how it is.
Sugar will make you worse.
I had what you are talking about. The worse thing you can do is freak out. If you feel like you are going to pass out, what is the worse thing that can happen? You'll wake up after 10 seconds.
You just have to deal with it. It's a crazy expierence that made me think I was dieing, freaked out about it and I just dealt with it. Once you can deal with it, it'll fade away because it's a mind sympton that will f*ck with you untill you can learn to ignore it.
You have anxiety. It will never go away. But once you can cope with it, symptons = gone.
It has to do with a area of your brain that get's alerted during the fight-flight. It's a flight sympton. It's like if your dad was gasping for air, and your freaking out, except your dad is not gasping for air so your mind is chemically imbalanced putting you in that falso situation. So instead of running to get help, because it's not really happeneing, you are instead dwelling on it and freaking out about it making it worse.