Yes it is better to keep the emotions outside the trading room if anyone wishes to be among happy traders otherwise greed, fear and anger etc can leads to wipe out the entire account.
well you can't get rid of them that easily I would advice newbies to trade according trading plan with stop losses and take profits. When you have control over your trades emotions won't be able to enter the game
Yeah, It could be dangerous to all the traders, but it is more dangerous to the Newbies. as they lack knowledge and hence they are easy to mold.
I'd like to add that even having a several-years experience won't free you from controlling emotions. Sometimes it gets hard
Emotions are unavoidable, thus you need to learn how to control it and harness it, than you could take better decisions in worst situations.
Maybe it's really that hard but i guess we can minimize by sticking to a proper trade management plan with clear targets and once the required target is achieved we should not trade for more.
Yeah, you need to practice a lot to become successful in Forex Trading, else you might just end up losing it all.