If some one lost a portion of your account, it is very difficult it will be restored. If you loss 20% of your account, you'll need to loss recover new balance to be 40%. And if you loss 50%, you'll need new balance to be 100% profit for the loss recover. So if you loss big portion of your account after that you'll be busy to recover the amount, but who will be profit? The challenge here. So money management is very important of the forex trader.