This may seem like a question that can be answered with a bit of discipline... and yes, it is... I am still relatively a new trader. I have my winning streaks. However, I am not there yet to take the right decision no matter what. On more than a couple of occasions I was in a situation when I wasn't in the right state of mind to trade. I didn't have enough sleep, I was anxious about private life, I had a hangover, I felt like a looser because I lost a few card games.... Normally, I shouldn't trade in such a state as I know from experience there is 80% chance of having a big loss against 20% chance of having a moderate profit. What I notice is I often start and continue trading on such days. First I am getting passionate about performance targets I may have... and I feel obliged to trade.... because I don't think straight hope replaces common sense. After I have a first loss, I run into a bigger loss while trying to recover and trading on pure hope. Are there any thoughts or ideas or repeatable "mantras" that stop you from trading when you know you shouldn't?