Your right. When I help and instruct, I relate past experiences and successes to the process.
The purpose of the analogy is about will. If you have the will to subject yourself to the hours of training it takes to compete on an elevated level, in there is the will to survive.
Anyone who sacrifices hours of their life for years only needs to be pointed in the right direction.
Now, it is true, I have known 5th degree, knock down karate fighters who couldn’t turn that over to the real world to save their own ass, but compared to the rest of the population, they have a hell of a head start.