Keep a trade log or journal of your trades for the day or week.  If you know that your biggest winner is 50 pips then do not allow a losing trade to be larger than 50 pips. If you do allow a loss to exceed your biggest gain then, effectively, what you have when you net out the biggest winner and biggest loss is a net loss on the two trades. In summary do not let your biggest loser exceed your biggest winner.  This is a good money management tip.  It is better to at least break even than to have to recover from a negative position.