Well, we can't deny it. I also lose like 90% of my total capital in my first month or two of trading but failure is a must for us to learn. That is why it is advisable to start trading with just small capital and just add later on when you are confident in your trading skills. There is no one born a trader we all experience tons of losses before our success. All we need to do in order to be better is keep on studying and learning from your own mistake much better if you will learn from others' mistakes.
You are absolutely correct! This is part of mind-set that differentiates successful people from the failed ones. Also there's a saying "smart man learns from own mistakes, wise man learns from mistakes of others". Yet, learning here doesn't mean paying money which you could invest otherwise, for something you can get free of charge from google.