Trading requires discipline; unclouded, unbiased thinking; and the willingness to admit mistakes without ego intervention.
Discomfort and profit go hand in hand.
Does all that mean that a trader is always uncomfortable and that monetary winnings come at the price of constant stress and depression? No, it does not.
The joy of self control, of getting the best out of oneself, of being able to pull through is a huge reward.
With time, this approach stops being uncomfortable and becomes the only approach that feels right.