It sounds to me as if you've lost your confidence.
You're probably entering a trade, staring too hard at the screen, gripping the mouse until it nearly squeaks, and are frightened of turning any win into a loss so you're grabbing it when it's there.
Well, if that's not you, then I've just described what I went through when I went through a sticky patch in the past. :cheesy:
This is how I cracked it. I paper traded for 3 days then traded for 1 day, paper traded for 2 days then traded for 1 day, paper traded 1 day then traded 1 day. I discovered that I knew my system perfectly well, and could trade like a dream on the paper trading days. Once I realised that I really did know what I was doing, I used to look forward to my trading days with renewed confidence, and never looked back.
Just reassess your risk and make sure it's within your comfort zone, make sure you never expose more than 1% of your trading pot on any one trade, and if you have three consecutive losses give up for the day. I find it also helps to set yourself a reasonably low daily target, then when you reach it give up for the day. You'll find your targets are reached earlier and earlier in the day, and then you slowly increase your target per day.
I also keep meticulous records, and I find it helps to tot up my average win, average loss, average daily win, etc. That way I know when I'm on course, and I very quickly know when I'm off course. I keep my records in Excel, and have a brightly coloured square next to each day which exceeded my target - it's nice to see the coloured squares get so frequent that they turn into long coloured blocks. Childishly simple, I know, but little things please my little mind. :cheesy: