Punishment.  The one word which strikes terror and fear into every subbie's heart.  In every D/s relationship it exists in one form or another.  And can be a very useful tool when used correctly.  Or very damaging when used without thought or explanation.  The following are some basic ideas and principles that i think are very important.  But these are just my opinions as always and you will decide as you wish.
 
 
 
 

1.  Always explain to the sub why they are being punished.

2.  Distinguish between playful games and actual punishment for misbehavior.
 
 
 
 

3.  Never punish by the threat of terminating the relationship.  Just the threat can irrovocably damage it beyond repair and cause extreme anguish to the sub.

4. Physical punishment isn't always necessary and some subs actually enjoy it and instead of correcting their behavior it just reinforces the fact that they can get pleasure from disobeying or displeasing.
 
 

5.  Explain carefully to the sub that it is the act that you are disappointed in.  Not the sub themselves.  Try not to lower their self esteem.  Serious damage could result.

6.  Never punish in anger.  If you are upset explain that to the sub and take the time to cool off before trying to discipline.
 
 
 

7.  Make the punishment fit the crime.  Think about what the offense was and what would work to induce the sub to make the necessary corrections so that the actions will not be repeated.