yes, trading has many factors that can be do something with the psychological state of one's trader. If you know that you had a bad trade, you should accept it and move on. always pay attention to the small things and be cautious. having some education about tradings,strategies and patters of chart may give you less risk on trading.
Sometimes trading has been end without profit as price dumped to low value or scammers also may cheat you. Please use perfect escrow in all your trades with online and local trading.
Just do trading and look at the chart continuously and set the trade value accordinly if you been involved in trading exchanges.