i think there is no none who can control his emotions completely , but it can be controlled by taking some mental strength steps like mind exercise.
for ensuring the success level according to me the mindset is really important , without it any kind of trading approach can be useless.
according to me , the successful trader is a trader who can predict the real faction of this market place with certainly.
success is too much to stay compare to failure time . failing lasting too much compare to success ratio.
the general traders have low commitment with low focus but the successful traders always have a focus to complete the target wherever is going .
commitment is everything in real life as well trading life. but if you cant expect a strong life with low level of commitment.