有的交易新手用五分鐘圖開倉（這不是我最喜歡的方式），在發現市場走勢與預期相反時，他們就會切換到十五分鐘圖等待走勢反轉。如果走勢仍與預期相反，他們就會切換到一小時圖，為自己留在交易之中尋找借口。接下來就是追加保證金了，因為他們的剩餘資金不夠維持倉位了。
當然，主要的問題是他們試圖留在虧損的倉位中，而不是在虧損較少時平倉退出。出現虧損並不意味著你不懂交易。太多交易新手都認為交易虧損了就是個失敗者，或是覺得自己沒有交易的天分。這是完全錯誤的想法。
專業的交易員都了解，交易中出現虧損是難免的。在投機的領域中，虧損是一定會發生的。學會應對虧損與其他的成功因素同樣重要。你不喜歡虧損，但你必須接受這個事實，不是所有的交易都能盈利。你必須確保虧損很少，這樣才能用盈利來彌補。切換週期表，固守在交易中不肯退出是不會減少虧損的。
在交易開始之前就要確定好出場點，並且要嚴格遵守。你應該通過日積月累來學會判斷，而不是用點差的移動來進行交易決策。你要堅持你的方法，在一筆交易中，頭都到尾都要保持在一個週期表中。
Don't Change Time Frames To Stay In A Losing Trade
Too many times I hear about new traders opening a trade using the 5-minute chart (not my favorite approach) and when the market moves against them, they move to the 15-minute chart to justify staying in a little longer, hoping that the market will turn around. Then if the market continues to move against them, they move out to the hourly chart to look for a reason to stay in the trade. As the market continues to move against them, they shift to the daily chart to hope to find a reason to stay in the trade. The next step is to get a margin call because they have no funds left to maintain their position.
Of course, the main issue here is that they were looking for a way to stay in a losing trade rather than closing it out at a small loss. Taking a loss does not mean that you do not know what you are doing. Too many new traders think that losing a trade means that they are losers or that they aren't smart enough to trade. Nothing could be further from the truth though.
Professional traders understand that if they trade, they will have losing trades. That is really the only guarantee in the field of speculation. How you handle those losing trades has as much to do with your success as a trader as any other factor. You don't have to like losing, but you must accept the fact that all trades cannot be winning trades. You have to keep those losing trades small enough to be able to make up for them with your winning trades. Switching time frames to justify staying in a trade is not how you keep your losses small.
Identify your exit point before you get into the trade and stick to it. Judge yourself from month to month rather than on every pip move in the market. Be consistent in your approach and stay in one time frame from the beginning of the trade to the end of the trade.
本文翻譯由兄弟財經提供
文章來源：http://www.actionforex.com/articles-library/technical-analysis-articles/weekly-trading-lesson:-don%27t-change-time-frames-to-stay-in-a-losing-trade-2008042243488/