Money management should be based on the probability of your set up. If you only have one set up then you should used a fixed lot until you double your capital then you can double your lot. But.... If you have different set ups and you could rank them by winrate...mae, mfe...etc..then you could vary your lotsize (bet). es P.S. others like to take a little money out to realize the fruits of their labor and have 50/50 schemes....add half to the trading capital and pull half out for hookers and blow...
i feel sometimes our all money management fail above all when market moves at random, because there is nothing 100% in Forex trading.