One failure that pained me alot was when I invested all my savings into forex trading. I thought I was going to make a huge profit from it because I had learned a lot about the market but my emotion made me lose all my money. The sad thing was, the more I lose my money, the more I pump money into it until my savings got blank. I learnt a very costly lesson to always learn how to cut down your loss and move on. If I had cut down my loss, I wouldn't have losed everything in my savings.