What do you do after you suffer a huge loss?
If you have more money would you again take the risk and invest or would you just stop trading and try to earn in some other way?
I think that when trading can not avoid loss, you can only minimize and control it with stoploss. You should have a specific plan for investing, the market is constantly changing and very complex you should accept and should not overstay each failure. Toughness will only lead you blindly and lead to failure.