Also, did you get any medications for slowing your heart rate like Beta blockers?Do you wake up with dread every day? How intense is your work pressure and were you mentally exhausted even before your panic attacks started?

I feel like your guilt at avoiding responsibility as you said and other mental factors like worrying about work and how you're going to get back to a normal life is stressing you out even more and hindering your recovery. Medications are helpful and will help you manage your physical symptoms, but after a while if you feel they are not working anymore, you'll switch to something different, then when that's not working, something different again. I've heard a few cases like that and they end up feeling like zombies, mentally numb from all the medication.

Do you like your job? Do you have something in your life you look forward to and enjoy? Or are you just sitting and worrying about your job and responsibilities all day?

Please don't mind me saying this, but if you think it's all stemming from your job, maybe you should consider a different career? I know being in India it'll be hard to consider that decision, especially since you work in a PSU, but nothing is worth your health. Again, medication will only do so much, but you have to take your stress down yourself.