Dear vijkris,
Yes , both are saying absolutely correct and and i agreed with them .
In my little own experience three things are important to become successful trader :-
(1) Trader himself is utmost important for success in trading because Good trader can make fortune with avearge Method and bad trader can destroy himself with world best method........ so develop (physiological , mental/ psychological) himself as a good trader.
(2) Develop or chose a Method with positive expectancy and this Method ( setup, R/R, MM ,TM) should be according to your nature and personality.
(3) when you are trading with your method you will be very comfortable ,relaxed and cool and there will be no ambiguity ,anxiety, distraction , psychological/ mental pressure, tension and fear........ for this your trading method must be very simple (not complicated ) and competent for real time trading enviorment.
HEM