recently, i’ve been pretty intensely stressed with school. so much so that my medication isn’t really covering those physiological symptoms as much anymore. my heart rate seems to be really elevated every time i notice it. so then, to try to counteract the awful feeling of my heart racing i try to do breathing exercises. 

they literally won’t work. i don’t know if it’s just my brain telling me they’re not working, but it feels like no matter what breath exercises i do, my heart just keeps on chugging like a train gone loose off the track. what am i doing wrong?