beginners often cannot discipline. I have been trading for months, and yes I am still a beginner, and I still lack discipline. I solved many of my trading strategies and trading rules and risk my trading for many times and newbies or beginners must have a healthy trading plan they have to work on it and I think the plan will work as they want ...... so lack of discipline is a big problem from many traders which I mean many losing traders they have to stick with their trading plans