I cannot fight ego because 'I' is ego. The only things I can usefully fight are those parts of me that the ego has installed as impediments to spirit, namely fear and laziness. When spirit is strong and pure (detached from subjectivity) it will eventually subdue the ego until it is little more than an embarrassment. Fighting fear and laziness is a lifelong campaign. And remember: the worst form of laziness is working hard at the wrong thing: working in the service of ego.