Trading can definitely be an emotional rollercoaster.  When your hard-earned money is on the line, its totally normal to feel those swings from euphoria when you are up to anxiety when things turn south and  stepping away from the screens or journaling techniques can help in the moment, but they dont truly get to the root of managing emotions long-term. 

The reality is, as human beings with thinking brains that release hormones in reaction to wins and losses were wired to feel those ups and downs.  There is no escaping it completely.  The traders who thrive over the long haul are not the ones who master the illusive art of being emotionless robots.  They have made peace with the ride and roll with the movements while keeping their focus on their goals.

Doesnt mean its easy.  But accepting you will never fully eliminate the emotional factor and focusing more on building resilience, adaptability and perspective could go a lot farther than tricks that just paper over a fundamental human experience.  This game not for the faint of heart, thats for sure.