YOUR STORY CAN SAVE LIVES

The word Stupid is defined  as:

Selfish, Thoughtless,  Unmoldable,Prideful, Ignorant,Dumb

Question:
 What is ONE experience that looking back was the most Stupidest Decision that you made. (Explain in as much detail that experience...how old where you, where did you live, who as in your life, did you know the lord, did someone try to warn you or help you..Etc).
 
Why was it stupid? What would "the New you of today" say to "the Stupid you of  your past."