Which is the best service to myself?

A person asked me “You do so much service as a Doctor to others . What is the best service you can do to yourself?”.I replied “Self Realisation is the best service you can do to yourself.” He asked me “Why can’t you do the service of making others realise their self?.”I replied “One can travel only inward but not outward.When one is incapable of realising his own self where is the question of awakening the Self in others?”He accused me of being selfish for attempting to realise only my own self. I observed Silence because  silence is the most powerful weapon in the domain of Conversation.🙏🙏🙏