I get lost in confusion...?

not sure whats going on here lately,i;m know as the guy who always has the answer to lives little problems,im a great problem solver ,but about two years ago i started having anxiety attacks out of nowhere,i'm an extremely calm person i never freak out in bad situation i just handle it and move on,but now i have to take depression/anxiety meds which i'm not fond of but i do take as advised.so here lately i've lost who i am do to the fact that i'm constantly worried about having an attack and i also developed "Lone A-FIB" which does not help the situation at all so they put me on beta blockers and those make me feel all screwy on top of the other meds ...this really sucks i just want to be back to normal and get off these damn pills...any suggestion