if you ever feel a chest pain spreading into your arm and up into your jaw take an aspirin ASAP. yes your simple household aspirin and call 911. in case you are 100% positively sure that you have arythmia you can either stand up quickly or bend down and pretend you're having a particularly difficult "poo session" (i.e. strain yourself) to try and bring back the heart into normal rythm.
so many perfectly healthy athletes drop dead of heart attacks. it's all in your head so to speak. stress is bad for you, activity is good but it mustn't be stressful. only be a workaholic if you enjoy (as in sex) your job, not to prove something to someone (as in mine is bigger than yours). otherwise you will kill yourself.
laugh daily. if you don't then get a divorce and marry someone else because that's what partners are for - to fulfill your life not drive you underground.