"...But that part isn't so complex - unless, perhaps we are really hungry or in pain, we can just decide to be happy. ..." RetroVirus
Retro, that is a very destructive fallacy....
My [idiot] father, who suffered from depression for [apparently] his ENTIRE life, was CONSTANTLY being told that he could just "DECIDE" to be happy...
It does not work that way.
If a person has something destructive in their life - under domination by a cult, abusive spouse - male OR female; abusive and intrusive parent or sibling; excessive levels of fear or anger or sadness; hidden medical condition that saps the strength without showing itself overtly - like underactive thyroid, hypoglycemia, mild anemia, etc,....
Then a person cannot just "DECIDE" to be "happy"...
A person CAN delude themselves into THINKING that they're "happy", but if they have not addressed underlying problem or problems, then the problem/problems will fester and roil and boil up - and often grow until they become much more difficult to deal with.
That sort of comment - when I was still associating with my family - often came from people who were tossing out "two-second" philosophies because they didn't want to consider the deeper aspects of the situation, or they were attempting to dispose of the problem quickly with platitudes because they really didn't want to be bothered with people who they perceived as "whiners"....
Yeah, I saw a LOT of that mentality directed towards my father by the Jehovah's Witnesses while I was growing up...
In most cases, it indicated a very shallow thought process and total lack of empathy for others...