Adrenal Stress is a life changing challenge. I have found taking high dosages of Vitamin B's and C has helped me out when I am stressed out. Instead of coffee I drink Techino coffee, a good substitute - it is alkalizing and no caffeine. Hot baths with epsom salt and lavendar work well after a hard day at work. A couple of good adrenal support herbs I found were Adrenal Stressend and Holy Basil.
Your MD is right, you need to take a good look at what is stressing you out and make some changes. Yoga, meditation, exercise or stress management classes.
Feel better. . .