It happens. Your luck is not bad, at least you made some profits. Lots of people can't make a profit from trading! So you shouldn't be upset! I think this lesson will help you in your future trading! As you said, this incident happened with you several times, then you may change exchange and you should check the price every day. A trader always check his coin's price several times in a day!
What a great advice! Thats right, youd better forget the loss and stop regretting about it. Well, Im sorry to hear your trouble guy, but you should know that with this trouble, you at least get a great lesson for the next time trading. Maybe your luck is not very bad, because you have realized your mistake and now you are more likely to become more careful and cautious. Especially, you will continually do trading with a better experience as well as skill previously. Indeed the loss in this market is kind of normall. However, most importantly, youd better not make the same mistake twice.