Ego flourishes in situations that have room for it.

In dire situations and extreme circumstances, ego really is a killer because time is precious and is wasted by ego. Thus killing not only your ego, but also the project itself, other people’s ego, careers etc. Ego in a dire situation is like a pressure cooker.

So the best way to kill the ego is get yourself into extreme circumstances; BASE jumping or insanely unrealistic project deadlines etc.