Emotional management comes from having strict trading rules and trading experience. You shouldn't be buying into positions on a whim. instead you should know exactly when to buy, where to sell and where to put your stop loss at. if you do it this way, trading becomes less emotional and much more controllable because it is based on math. Good traders don't gamble, they do all the calculations before they make their move.
Trading would only like a gamble when you do jump directly without any proper plans and calculation on such trade and yes emotional management is really a big factor that do affect our trading style or pattern because this would really affect our mind on making decision on setting up on a trade. Experienced traders surely passes this kind on the past and mostly have this kind of situation are on newbies.