Revere your power of judgement. All rests on this to make sure that your directing mind no longer entertains any judgement which fails to agree with the nature or the constitution of a rational being. And this state guarantees deliberate thought, affinity with other men, and obedience to the gods.
Our mindfulness and judgements (discipline of assent) should align with the nature of the whole in that we should love our fate (discipline of desire).
Deliberate thought (discipline of assent); good social interaction (affinity with others) and loving what happens to us (that is out of our control).