"a type of a medieval Catholic act of self-flagellation"
Ah yes, the religious theory of sacrifice and suffering!  Rethink that.  I recommend "The best revenge is living well" as an alternative.
"“I have never had a drink because of my brother,” Trump said."
"Trump says he has strict rules for his children: “ No drugs, no alcohol, no cigarettes.”"
I did not know that.  My opinion of him has improved.
The thought of a little marijuana now and then is appealing to me, but I have not had any in about 30 years.  Maybe in someday in Las Vegas.  A little bit of wine with dinner is OK.  Cigarettes were designed to make some old guys in Virginia richer. 
I would also add no tattoos and no body piercing to Trump's list, but I am pro choice.  Live your own life.