Accepting your mistakes and losses are part of moving forward. You just need to control your emotions and introduce discipline in your trading life. Forex is not easy thing to be successful. Just be patient and look towards the future.
It seems this guy is only trolling. Doesn't seem like he is really serious at all. I tried getting into forex and traded it in a demo account. It moved too fast for me. Add to that the leverage which was 10/1 if I recall correctly. By this time and his losses, I would guess he has already blown up his account and his forex broker would have closed if not, suspended his account. I doubt they will pony up monies in the equivalent of a margin call, whatever they call it! Forex brokers would not be that stupid to allow any customer to continue to run up losses which they would have to deal with if the customer has no monies to pay for it!
That is the best way to put it. Even though we should try to minimize our losses, hey are simply inevitable in trading. Instead of harping on about spilled milk, it is best to strategize more intelligently and keep your emotions in check.