How to find extraordinary opportunities

Traders are often advised to work with a risk reward ratio of 1:2. In this way
they would "only" need a hit rate of a little over 33.33% to trade profitably.
Mathematically, this may be true, and it also sounds plausible. However, the
question is whether it really works that way.
In this short book in the series "Holy Cows" Heikin Ashi Trader pursues the
question of how to find trades with a risk reward ratio of at least 1:10 or
higher.
He begins with the observation that it is much more effective to grow your
account with a few "asymmetric trades" than with the 1:2 model. Thus, traders
should try to become specialists in extraordinary opportunities.