Happiness and excitement are also forms of emotions and although they are positive emotions, they can still be very dangerous emotions to trade with. While making analysis to set up a trade, you have to be as clear headed and minded as possible, Happiness and excitement can make you make wrong decisions just as the other emotions that you have mentioned. An over excited trade is very prone to making mistakes out of too much uncontrolled excitement. To be a good trader, you must know how to balance and keep your emotions controlled when making analysis.