Your entry/exit strategy determines the difference between profits and losses. For example, you may believe that the value of a currency pair will rise, but if you wait too long to enter a trade, you will limit your potential profits. Finding an entry point usually begins with thorough technical analysis and a strategy. You want to enter trades for a specific analytical reason, such as identifying a clear trend, and you want to have a strategy in place for potential entry and exit points.
If money management is one half of trading, determining entry and exit points is the other. If we can't find good trigger points for our trades, no amount of successful analysis will help. Even if we know that the value of a currency pair will rise in the future, unless we know when that rise will occur and where it will end, our knowledge is unlikely to yield large profits.