anxiety, palpitatios etc

hi I suffer from the deaded anxiety attacks not full-blown panic attacks but feeling like I can't relax and that someone is sitting on my chest! then shaky symtoms like I'm cold or sometimes hot, dead feeling in the tops of my arms, just plain nasty! Anyway i was reading online about the Linden method that claims to cure 100% of anxiety, panic attacks and phobias has anyone heard of it? it costs 100 pounds sterling so I wanted to check if anyone knew anything before I parted with my money!!