He must hold the nose-rope tight
and not allow the Ox to roam,
lest off to muddy haunts it should stray.
Properly tended, it becomes clean and gentle.
Untethered, it willingly follows its master.
You have successfully caught the ox of your Buddha nature, but there’s still work to be done. Discipline is still needed: you must keep hold of the ox and put the dharma into practise so you can tame your mind. When you practice you feel more free and compassionate, but it only takes one tiny thing to go wrong, one bad day, and your old conditioning will kick back in. You may start to experience spontaneous joy and a sense of peace, but difficult emotions can still catch you by surprise and throw you off track.