hi...
currently your son is having both depressive and
anxiety symptoms..
his depressive symptoms are secondary to his anxiety symptoms.
if initially the cause of anxiety is that you are unable to treat the patient as a
medical doctor, if you are having job as a MD-PSM in govt. then i think you are free after 5 or 6 pm, so you can improve your clinical skill to join any good senior physician during evening hrs and by doing this you can improve your clinical skill within 5-6 month so no need for preparation of any exam like DNB....
and preparing for DNB or other exam is not a better option at the age of 38, as even after doing DNB you have waiting period in private practice
one good aspect of non clinical side is that you are free after 5pm, you can spend your extra time in other creative activities.....
and before any thought about DNB, one advise is to visit few freshly pass out clinical doctors, also to ask them about their working hrs, no of patients they are treating, about their practicing style, about their satisfaction, about their earning....
to reduce anxiety-
do routine well, handle day to day issue as much as possible from your side, not blem yourself for everytime
give time to your self to think about carrier decision, what should be possible currently
take opinion of senior of both clinical and non clinical side.