According to Osho, yes—be utterly selfish: pour all your energy into becoming enlightened, not into preaching or recruiting. No one has a duty to spread his message. First realize truth; otherwise you only propagate lies. When consciousness flowers, your very presence shares it effortlessly—love radiates, others are touched, questions arise. Become the message, not a missionary; authenticity precedes altruism.
Light your own lamp first; once it shines, people will see and feel it—no need to go selling lamps.