I've been faced with huge loss in my life not only once in my life but many times and every time you face with huge losses you promise yourself that you are not going to make the same mistake again but something else happen in your life and accidentally you make few mistakes which can be fatal and make you a big loss in long-term. What I learned is that you should be very clever and trading, buying or selling coins or whatever else without basing on your feelings, leave the feelings at the other side and check if it worth or not to buy invest in a coin or better sell it before it is too late.