This topic might be a bit over the top for most newbie traders here, but here is a small reminder. Folks looking for 100% gains on their accounts should be ready to handle 50% to 80% drawdowns in their accounts.
Larger targets require more drawdown appetite.
An example from the stock market. Say a stock is trading at $100 and it crashes down to $8 per share. Now if the traders expect it to go to $50 a share at some point in the future, they should be ready to accept that the same stock can go down to $4 or $2 or have 50% to 75% drawdown from your $8 buy ( which looked like a fantastic deal when seen from $100 level ), before it starts shooting upwards.
The same happens with currencies. Traders looking for extreme over-bought and over-sold conditions should be mentally prepared to have gone into a trade at the wrong time, and must be able to handle the downside that comes with it.