Messi knows how to play soccer. The fact that he didn’t know exactly what he knows, and can’t explain it, doesn’t keep him from playing soccer, scoring goals and being the best and most talented player in the world. If he tried to explain it, it could possibly go wrong - just let him get on with it. Try it yourself, explain what it is you are good at and what makes you tick.
Branson, Jobs, Gates, Ronaldo are all recipients of having an undefinable talent. We only see the results, not why, or how it works.
Einstein explained it by saying, ‘that he had none and put it down to an un-satiable curiosity.’