Complexity means the difficulty encountered while doing any task, solving any problem. Complexity can be mind-boggling at times and overcoming it can be quite an uphill task. Situations in life get complex at times and put our patience and tolerance to test. If you keep yourself cool, calm and composed, you will deal successfully with any sort of complexity or hurdle that comes your way.
In the words of Alan Perlis, "Fools ignore complexity. Pragmatists suffer it. Some can avoid it. Geniuses remove it." Running away from complexities is something that cowards do, while fighting with a complexity and doing away with it completely is a hallmark of champions. Champions have this kind of tenacity of never giving up even when the going gets really hard. When the going gets tough, the tough get going and rightly so. So, don’t shy away from facing any complexity that comes up in life.