And sometimes it is best to take a break. I have seen a few people that will start trading and losing, and instead of them to quit and continue another day, they still keep trying and chasing the loss and in the process of doing that they keep losing more and more money which is very bad, and at the end of all that they still dont achieve anything.
People really should know when to stop trading. If its not working out for you today, you should just leave trading for the day and relax your mind to continue another day. Lastly, I would like to say that the fourth reason that was stated in the article from the link you posted, which is Greed, its very important that we find a way to get rid of such. Greed is very bad and will lead you to costly mistakes.