On The Fallacy Of The Holy Grail:

“There are many books, courses, and software that purport to sell Holy
Grail systems. They are mostly hype that is based on a perception of the world
that does not jibe with reality. The pot of gold (traders) are hunting for,
however, isn’t at the end of the rainbow. That pot is built, coin by coin,
based on your skills as a trader/investor, and on your ability to consistently
find reliable ways to limit your risk while participating in opportunities
that have much more reward than the risk you are taking.”