Don't put all your eggs in one basket. Diversity. Diversify your investments so if one falls, other investment may help you to recover.
I love this formula / proverb, all traders are sometimes greedy. so they forget the risk of trading without leaving capital to keep prices deeper.
Trading does look cruel to anyone who does not have a strategy.
thank you for sharing, this post is very useful.
Along with this principle, I guess that one should keep in mind that they shouldn't invest/use as capital what they can't afford to lose. This is a part of being greedy. Some get too greedy that they compromise their savings just so that they could engage in trading.
I would also like to add that you should set your goals. It's always important to set goals so that you may not be blinded nor get lost in the process.
These are simple principles however some traders have forgotten to abide by them and has led them to their failure. Emotions are hard enough to control, it's discipline that one must practice.