Product rule
Ask Once
The most important part of DECRIA is not the calculation. It is the rule: ask the same thought only once.
Why it matters
When people feel uncertain, they often keep checking, refreshing, rephrasing, and asking again. That can feel productive, but often it is just another loop.
The practice
DECRIA turns the first moment into a single cue. After that, the practice is to stop asking and return to action.