@UweMoench I agree that skills, experience and knowledge are important aspects of trading but I want to add another important element to it which is often underestimated, that is, self-control. It is very common for a trader to weigh down under his emotions and see his strategies failing miserably. A good trader must be able to control his emotions to succeed in trading.
The importance of skills in trading cannot be exaggerated. Trading without skills is a gambling which will lead to the total loss of the deposit. By skills I mean not only the skills to analyse the market, but also skills to manage your money and risks and also to control your psychological state. The most interesting thing is that you cannot just acquire some skills and stop improving yourself. You need to constantly developing your skills in order to catch up with the market which is constantly changing. If you don't change with it, you are sure to lose.