I tend to suppose that traders can avoid overtrading. Everything they have to do is just not to let the emotions get them down and comply the regimes of working and relaxing. It's really important to relax from any kind of activity, especially when we speak about trading activity. Thus, everything you need to do in order to avoid overtrading is to relax properly. You just need not to approach to your computer and workplace in your weekends. Of course, there are some people who claim that they can't be tired after trading, however they just don't notice it. I guess that it's their main mistake which eventually lead them to overtrading.