It's really a good advice you have given to us here and I think the major problem is been able to keep those tip. I do believe that majority of us know all this point you have listed but keeping them is the really problems with investments and trading. For example it is impossible to keep trading when you know that the market is going against you and you are lose.
The most difficult thing is the psychological control when the market starts to appear red because it will be a time when you will be very difficult to calm down and easily fall into a state of panic. I think this rule is only applicable when the market shows signs of new growth and we will make a profit if we can calm down at all times. Of course these tips are useful but for me this is not the best advice because the bear market often brings surprises to everyone.
We easily fall into panic because we do more than our power, because of the big profit we intend to cash from one single coin, we cough out from our pocket what is far more than what we can afford not to have tension on, and dump it into the market, in the name of trying to cash a bigger fish.
We will continue to be in a panic state when market becomes red if we continue to invest capital that is more than our power or what we can afford to lose, no matter how promising the coin look, if we really want to invest without looking back till future, just put in money that we can let go off, then believe me, all these panic sell and tension will disappear.