In the Naradiya Purana it is directed: "One should not accept more than necessary if he is serious about discharging devotional service." The purport is that one should not neglect following the principles of devotional service, nor should one accept the rulings of devotional service which are more than what he can easily perform. For example, it may be said that one should chant the Hare Krsna mantra at least 100,000 times daily on his beads. But if this is not possible, then one must minimize his chanting according to his own capacity. Generally, we recommend our disciples to chant at least 16 rounds on their japa beads daily, and this should be completed. But if one is not even able to chant 16 rounds, then he must make it up the next day. He must be sure to keep his vow. If he does not strictly follow this out, then he is sure to be negligent. That is offensive in the service of the Lord. If we encourage offenses, we shall not be able to make progress in devotional service. It is better if one fixes up a regulative principle according to his own ability and then follows that vow without fail. That will make him advanced in spiritual life.