You should definitely stop trading and walk away. Then, when you are less stressed and more composed, spend a few days – or however long it takes – to recheck your trading method, that is to say, your rules for entering and exiting a position. If you haven’t got a method, in my humble opinion don’t begin trading again until you do. You can also check your records and analyse each trade to see why it went wrong. Maybe a pattern will emerge.
If you are position trading (holding a long or a short position for a few days) you should look to see whether your tried and tested method really only works well in a trending market, say, but that the market(s) you are currently trading happen to be going sideways, as most of the major indices have been of late.
But which markets are you trading? Equities, equity indices, FX, commodities, interest rates etc? Are you day-trading, position trading, scalping? And are you using shares, CFDs, futures, options or spreadbets? I’m sure t2w members could volunteer their opinions on the particular markets which might offer you some guidance in your analysis.
And as Oatman says, we all hit bad patches from time to time. I’m in the middle of one right now simply because the particular markets I trade are faffing around going sideways whereas my methodologies work best when they are in a trend. Until such time as they break out of their range I’m virtually a spectator, and a very frustrated one at that.