Often people who have been trying to change their alcohol/other drug use, or their depression or anxious feelings will feel very badly about themselves if they have a lapse - they will probably see it as the end of the world or a finish to their attempts at quitting. You may have already had some of these thoughts.
The ‘Breaking the Rule Effect’ could happen if you have a slip-up and “break your rules”.
These rules could be staying off alcohol, pot or speed completely, or cutting down to a lower level.
Or, your rules could be about staying well, and not getting depressed or worrying again.