So, in this way, take shelter in your service, and not in your mind. When it starts to ramble, just chant and serve. Don't give up the struggle. As soon as you do, maya's got you. And then you'll just start in again with your fault-finding tendencies. Krishna will only tolerate that for so long. Don't lose this rare and valuable chance to become a devotee of Krishna, and blow it by committing offenses and losing the association of devotees.
October 25, 1986, Letter