Article by Bradley W. Gareiss, Technical Analyst, GFT (FX360.com)
Trading errors are usually induced by emotions caused by previous trades. The most dangerous emotional catalyst (in my opinion) occurs when a trader loses a trade they felt was a certain winner. After losing this trade, a trader feels sad, angry, or even vengeful against the market. This causes a trader to enter a trade irrationally in order to win back what they felt they were cheated out of. Of course, this trade usually is a loser. If it wins, this can be even worse, because it encourages this type of decision making in the future, which could lead to even larger losses.
In my last 3 losing trades truely reflects the above statement
2 were winning trades that turn into losers 
Open Time Type Size Item Price S / L T / P Close Time Price Profit
2010.02.11 21:07 sell 1.00 eurusd 1.36737 1.36679 1.36526 2010.02.11 22:18 1.36679 58.00
2010.02.12 06:57 buy 1.00 eurusd 1.35578 1.35470 0.00000 2010.02.12 07:01 1.35470 -108.00
2010.02.12 07:04 buy 1.00 eurusd 1.35527 1.35583 0.00000 2010.02.12 07:50 1.35583 56.00
2010.02.12 08:01 buy 1.00 eurusd 1.35709 1.35730 0.00000 2010.02.12 08:10 1.35763 54.00
2010.02.12 08:15 buy 1.00 eurusd 1.35724 1.35796 0.00000 2010.02.12 08:56 1.35796 72.00
2010.02.12 09:00 buy 1.00 eurusd 1.35892 1.35738 1.36088 2010.02.12 09:16 1.35738 -154.00
2010.02.12 09:29 sell 1.00 eurusd 1.35729 1.35870 1.35386 2010.02.12 09:53 1.35815 -86.00
2010.02.12 10:02 sell 1.00 eurusd 1.36087 1.36207 1.35907 2010.02.12 10:08 1.36207 -120.00
2010.02.12 11:07 buy 1.00 eurusd 1.36091 1.36143 1.36250 2010.02.12 11:27 1.36143 52.00
5.8pips $58
