Many retail traders with little capital often exceed the risk limits and open too big orders hoping that they could live by trading. This is sometimes a part of their trading plan actually...
This is what we call overtrading - it is the simplest way to losses and/or burning down your account even amongst the most experienced traders.
Therefore if you eliminate the possibility of overtrading (i.e. by a proper construction of your trading plan) - you will minimize the possibility of experiencing losses. This is applicable throughout your entire career as a trader!
1. Unjustifiable large amount of opening orders.
2. Large number of hours in front of the screen.