What's one rule you stick to when trading?

I have several rules I force my self to abide by when trading. Some are specific; others are more open ended. But I (attempt to) never break any of them. What is one rule you set for yourself? Try not to repeat any rules already mentioned.

Submitted May 25, 2016 at 08:27PM by drubatuba http://ift.tt/1Ueof9e