Oh, i know exactly how you feel.
for almost a year i was doing acid and thizz on a daily basis
You probably relied on thizz to give you confidence and make you feel more comfortable with yourself and others around you
i know i did.
So when you go off of it after being dependent on it for so long, you start losing all that confidence and thats where the anxiety falls in
when i went off of it, my anxiety went through the roof.
i would have panic attacks so bad that id pass out.
Anxiety is the cause for you thinking that your heart is constantly beating irrationally.
and also your troubles with breathing
i used to have to breathe into a paper bag (old school)
im not gonna say get off drugs completely
because i still do many different things
i suggest getting on some form of anti-anxiety meds
personally i like xanax...
unfortunately i have bi-polar disorder so i cant take other axiety meds without me going insane
haha
Anyway, do that
and you can still roll.
just limit it to like once every two months
thats what i do..and its been working pretty good.
make sure you drink lots of water and get good sleep
good luck and be safe!