The trading word itself represents the risk. So no matter how much experience you have or how good is your mentor you will have every chance to lose. This safe trading word doesn't exist. If you are trading any asset whose value depends on various external and internal factors which you can't control you will never be safe. The thing which matter is you should always be in overall profit no matter how you trade, what you trade...
https://www.bestbitcoinexchangeguide.com" rel="bitcoinexchangeguide">
You are saying about expert traders then I do not agree that it is right because the experts know that which time is for trade and which is to stop and wait for the good time. Means that they do not do trade at risky time so it is not right that they also lose. I met with a number of traders who trade while do not have lost in their trading time. The lose which is recoverable within no time is not considered as a lose.