For example, the Lakers won by 25 points last night. Tonight they are favored by only 9 points. So, tonight I have to play the Lakers minus the points. Georgia Tech lost by 19 points their last game. Whoever they are playing, I'm betting the other side.
Some handicappers pick more winners than losers, but still lose money.
This is because they use poor money management techniques. Most commonly, they bet parlays and use progressive betting systems. All I can say is if you continue doing this, there is no hope for you. You will never win spots gambling. Examine your losses carefully.