It is difficult to meet success in the effort to insure one's own spiritual welfare, even without seeking to benefit others. If you seek another's spiritual welfare before attaining your own, it would be like a helplessly drowning man trying to save another man in the same predicament. Therefore, one should not be too anxious and hasty in setting out to save others before one has, oneself, realized Truth in Its fullness. That would be like the blind leading the blind. As long as the sky endures, there will be no dearth of sentient beings for you to serve, and your opportunity for such service will come. Till it does, I exhort each one of you to keep but one resolve: namely, to attain Buddhahood for the benefit of all living creatures.

(Milarepa)