My heart won't be able to beat so fast it kills me correct? i have a bad anxiety and ocd disorder where i'm consistently making sure it isn't above 80

Ocd and anxiety: I hope you have been evaluated by a mental health professional. Certain medications like SSRI s might reduce both your anxiety symptoms as well as your OCD symptoms ( at higher dosages possibly). CBT ( cognitive behavioral therapy) might also be helpful by itself or in conjunction with medications. Getting treated by a professional should definitely improve your life quality soon.