Murphy's law
Network security is the same as Murphy's law in the sense that, if something can go wrong it will go wrong. To be successful at understanding and applying network security, a person must master the three Ps: persistence, patience, and passion.
A cyber security professional must be persistent in their pursuit of a solution to a problem. Giving up is not an option. The answer will be there; it just may take more time than expected to find it. Having patience is also an important trait to master. When dealing with network anomalies, it is very easy to get frustrated. Taking a deep breath and keeping a cool head goes a long way towards finding the correct solution to your network security problems. Finally, developing a passion for cyber security is critical to being a successful network security professional. Having that passion will drive you to learn more and evolve on a daily basis to get better. Once you learn, then you will improve and perhaps go on to inspire others to embrace similar aspirations in cyber security.