You sold BNF 11300 CE for some reason, may be BNF was coming down....so that time it was a right decision. But when BNF starts going up you could have bought that again. So holding when the trade is not going your way is a bad strategy...but re-entry when the market starts going your way is a correct trade to do. It would make money for you and at the same time you dont hold a loosing trade. So re-entry is the correct action not holding a bad trade in eternal hope that sometime it will work.
Smart_trade