There is no such thing as being born a natural trader, a professional trader is a result of years of training and retraining, mistakes, discipline, losses, gains etc..the sum of these with continuous learning is what makes one a better trader.If you have never lost money as a trader,you are probably inexperienced and are likely to make more grievous blunder.It is not an exact science.
Right.All good traders right now are not born with it but they are made with the tests of time.They have their own long years of development and enhancing their skills and widen their trader's knowledge until they have reached to the point of having their own expertise.Good traders have experienced so much losses and a lot of failures until they finally become experts in trading.