In order for anyone to cope with the stress of trading, the person ought to have known what trading entails, you don't just do trading because your friends are doing it, rather you do it because you want to and ready to pay the price attached to it once anyone interested in trading understand this, the person will be a better trader thus overcoming stress through knowing when to trade and when to exit.
Also, some people who found trading stressful went into long term holding and/or investing in new projects that will give them good profits.
So in all, it is wise to know what your capabilities are and utilize them to the fullest.