faith in God can take us a long way in keeping ourselves composed emotionally

If we go by the definitions of the traditional advaitam etc., then lifestyle management is not a part of Vedanta, whatever anyone says.. 

However,  if by the term  Vedanta   we mean to indicate   the real and idealistic life principle, any explanation  can be fitted into the definition.. 

We face similar problems of many inclusive definitions,   "socialism"  being an example.. 

Of course an attempt to keep emotions under tight reins is a good idea for internal and external peace, whether such attempt forms part of Vedanta or not. 

Anyway it is easier said than done. 

The surge of emotions is dependent not only on mental states but is definitely related to biological factors like health, endocrine flows and many such things not strictly under the control of man. 

Definitely faith in God can take us a long way in keeping ourselves composed emotionally.