It's sad, of course, but I take it as an experience. I analyze and try not to repeat mistakes, I study investing and trading strategies.
Losses will serve us as a big help when we are trading. It's only depending on how you will deal with it. It's better to deal with it in a nice and light way because if you will treat each of your loss as heavy one, you will definitely hurt yourself depending on the amount that you loss. Otherwise, just keep with the flow.