@talshemtov
The other part is the most important. If your strategy beside isn't capable of forecasting price moves, this trick will not save you.
Basically if a system following these rules :
if forecasting is:
-up move -> long X lots
-down move -> short X lots
-no significant move, or unable to know which one -> 0 lots (no position)
Is unprofitable, no matter the money management, no matter how you take positions, it will not be profitable.