Martial arts are, in a very real sense, a way of solving problems.
These problems can be broadly defined - improving fitness or learning to defend yourself from an attacker, or more specific, such as how to land a particular punch against a particular opponent in a particular bout.
The parallells between this and solving problems in business or personal life are easy to see. Dealing with difficult customers, expanding your skill base, managing stress and finding opportunities where others see difficulties are all part of this. Not sure how?