A common misapprehension is to think of insight and egolessness in abstract, even metaphysical terms rather than as comprising concretely-lived attitudes and behaviour. But realizing the truth of egolessness simply means being truly and deeply unselfish. To contemplate the principle of egolessness as some special principle that is somehow separate from our actual behaviour will leave it as far away as ever. If we find it difficult to realize the ultimate emptiness of the self, the solution is to try to be a little less selfish. The understanding comes after the experience, not before.
from Sangharakshita Complete Works - volume 15: 'Pali Canon Teachings and Translations' p. 339