And this guy focuses on the structural aspects: https://www.elitetrader.com/et/threads/billionaire-ken-griffin-buys-americas-most-expensive-home-for-238-million.329153
Humility. Risked too much and earned a gambler's ruin? Assumed you were wicked smart and traded right away? Felt like you were owed profits and a ready made strategy? Trading is first an exercise in humility, then in ability. That markets punishes arrogance and greed is to me evidence that they are a part of nature and its innate justice, which could be one way of describing a holy grail.
The holy grail in terms of maximum returns is trend trading but it can be very volatile. For consistent returns its just scalping or swing trading support and resistance. It really is that simple. But of course, easy to pickup but difficult to master the nuances.