Pain is an effective teacher. If a failure is painful, it gets fixed. If a failure is relatively painless, it gets ignored
When the consequences are severe, people learn quickly
The more immediate the pain, the less likely the behaviour
We repeat bad habits because they serve us in some way, and that makes them hard to abandon
Increase the speed of the punishment associated with the behaviour
There can’t be a gap between the action and the consequences
The strength of the punishment must match the relative strength of the behaviour it is trying to correct
Behaviour only shifts if the punishment is painful enough and reliably enforces