One attraction of being National Security Advisor is the sheer multiplicity and volume of challenges that confront you. If you don't like turmoil, uncertainty, and risk- all while being constantly overwhelmed with information, decisions to be made, and the sheer amount of work, and enlivened by international and domestic personality and ego conflicts beyond description- try something else. It is exhilarating, but it is nearly impossible to explain to outsiders how the pieces fit together, which they often don't in any coherent way.