Yoga is the stilling of the mind. How you still the mind depends on your personality - through emotion, through philosophy, through meditation, or through action. Karma Yoga is for those inclined to action. Doing active tasks without reward or gain. Not for yourself, but because it prevents you from being superior to that task. Effectively chores. I like the idea of task rotation. Never give someone a job to do you wouldn't do yourself. I agree that we should focus our work on the things we are good at. But we should still be competent at life. If you are prepared to ask someone to do something for you - you should be prepared to do it for them. At least sometimes. While you are doing it, you might just forget what a big deal you are. That is half the chaos.