I have not come across a person who is depressed and happy. Or
happy and depressed.
Depressed and pretending to be happy, - yes.
Why is a person depressed or happy?
Chemicals in the brain?
This chemical = depressed ; that chemical = happy.
Brain activity is an electrical process, that produces a
by-product. Over activity mucks up the brain, and causes fatigue,
dullness, headaches, or other discomfort, in most people. In
some people it causes depression, or other
psychiatric problems.
It is the working of the brain, the thinking.
Thoughts that goes round and round will over work the brain.
Happy thoughts are usually brief, but produces chemicals that
causes elation.
Usually the external factors that cause the mind to
ruminate are often work related issues, (for the common man),
and hypocrisy, (for the rich and successful).
Drugs can clear the weary mind. But not cure the
depression. Which can reoccur as easily as thinking again.
My two cents worth.
Cognitive behaviour theraphy is not bad., medicine relieves but
don't cure depression.