Big mistake, Again!!!

29th June, I did a big mistake again by not exit position (cut loss) where there was open gap down in morning and afternoon session. And today, crude oil and soybean as well as DJIA has been fallen down so huge. I'm not sure what i'm going to do tomorrow. Exit position with losing almost rm 1000 and enter a new short position? i'm not sure though. but if price is gape down, sure i'll enter short position.